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This show is sponsored by Killer Kin, a podcast from I D. Family dynamics can be tricky, and sometimes even the people closest to you can become the most dangerous. Killer Ken from ID explores real cases about how family life can fall deep into manipulation, obsession, and murder. Unpack what happens when rivalry and desire for control lead investigators and relatives questioning what future some of the darkest crimes ever committed. Does evil run in the family? Listen to Killer Ken wherever you get your podcasts. Hi there, Everybody. Welcome to 2020 the After Show. I'm Debra Roberts, and as always, it's great to have you with us. Today we are going to do what we always do, which is peel back on a recent 2020 episode and one that we just can't stop talking about around here, which just. It's called the hunt for Mr. Right, and it centers around a beloved American university accounting professor by the name of Sue Marcum. And she was known for her kindness and also just her generosity to her students. And on October 25, 2010, people were just absolutely shocked when sue was found murdered in her Bethesda, Maryland, home after a friend went to go check on her after not hearing from her. Later on, an autopsy would confirm that she died of a blunt force trauma to her head and she was asphyxiated. Her house had been ransacked, her car was stolen, and police originally thought this was just maybe some kind of a horrible robbery gone wrong. They had very little to go on in trying to solve this crime, but of course, investigators began to unravel it, and what they discovered was a web of deception, betrayal, and even a secret relationship that shocked even her closest friends. They had no idea about this. We're going to reveal emails between sue and her killer and talk a little bit more about how investigators were able to crack this case and put this puzzle together. And of course, to help us take a good look at this and to break it all down is our 2020 contributor, Pat La Llama, who is with us on so many of these journeys and brings such clarity and such insight to stories like this, pretty particularly those around women who were victimized. So, Pat, it's so great to have you back with us.
B
Thank you. I love being here, and I particularly feel very strongly about this episode. And I think we can help our viewers and listeners understand more about why this case happened.
A
Well, you were just so passionate about it, and one of the things you're always passionate about when you cover these stories with us is it's not just about the crime for you. It's about what happened around the Crime and the motivation. And you know, there was a very big wave with this particular case. But what was it about it that attracted you? When you think about Sue Markham, who is this 50 something year old, very smart professor, a single woman, and you know, suddenly killed. What was it that caught your eye right away?
B
Something very specific. You know that Deborah, we. Our job in telling these kinds of stories is to help people better understand the criminal justice system. But beyond the actual crime, for, for me personally and why I became involved in criminal justice coverage is the human condition. What makes a person do such horrific things at the risk of losing their freedom and their livelihood and their families and their loved ones? What is it that drives us psychologically? And I looked at this case and I saw a very specific thread and that was a woman, brilliant, loving, generous, funny, adored by her students, intelligent, and fell into a trap that most people don't really understand. Because what I heard throughout covering this case was, well, how could such a brilliant woman let herself be taken over by this one man? It's a complicated thing that happens to us. Even if we are intelligent, even if we are successful, we who among us haven't fallen for someone who gave us a good line and we looked back later and went, oh yeah, wow, where was I? But she went further with this and I think we need to explore that.
A
Before we even get to that. And what police eventually discovered. Let's just talk about Sue Markham, Pat, and what you discovered about her. You said she was this brilliant woman, she had a lot of friends, she was very much into yoga. What did you learn about her?
B
She was a woman of substance, a renaissance woman, so to speak. She loved art, she loved music, she loved hanging with her friends. But what really struck me is hearing her students say that she made accounting fun. I think that pretty much encapsulates because.
A
It'S hard to imagine that making fun.
B
So what kind of a person can do that? Another friend said that she was zany. It's not a word we hear very often today, but I think of someone zany being comical. I mean, this woman once did accounting for the circus.
A
Barnum and Bailey shed a lot of light.
B
I think it's fair to say that she was searching for someone. And when she met Jorge Landeros, something struck her. She even said she was enamored from the get go and she could never get out of that after.
A
Well, let's talk about the crime scene, because this woman, her friends haven't seen her, police show up and right away the crime scene looks a little strange. You know, the windows have been lifted, electronics piled up, her car has been taken. So initially this appears to be possibly a burglary. That's the route police were taking right away. And then they discover not exactly.
B
So that was at first glance. Remember, it's the initial observations that they're making. And we all do know it is a fact that there were several robberies in around the area over several months time. And so when they saw that her car was gone, when they saw that some stereo equipment was moved and other items that, okay, oh, and the window, that would end up becoming very important because the theory was, oh, somebody broke in. But later on they started looking at that screen in the kitchen and realized that the screen was pushed out. Now why would the screen go that way if you're breaking in? And that's certainly not the way you left if you were the robber.
A
Right.
B
But the big thing was her car being gone. Now there were other clues as they started looking at the fact that she was still wearing a relatively expensive necklace and they started putting pieces together and started looking at documents and. And then they realized, not so fast, this does not look like a burglar.
A
Yeah, yeah. There are always those telltale clues which we uncover so. Well, I think in 2020. Well, what was interesting here was too, as often happens in our stories, you know, we think things are going in one direction. Her car is stolen. There's an 18 year old by the name of Deandre Hamlin. Police initially think, okay, they've got their guy and ultimately he's not the guy, he just happens to steal this car.
B
This took the case in such a different direction at the time because imagine any investigator is going to go, well, it's got to be related to this guy. I mean, you know, of course they're going to look into it. But your first thought is, here's this young man, they've got be on the lookout, you know, around the area for this stolen car. And here's this young kid and he's driving it and he gets into a big high speed chase and then he's arrested. And you can imagine that police said, we have this is it. Right, it's him. But then there's no DNA from him.
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Nothing connecting him to this case, nothing.
B
That was stolen from the house, like I believe an Xbox and some other items is in his home. And eventually they realize this is this real? This is not our person. Back to square one.
A
Yeah, back to square one. We're going to take a quick break and when we come back, Pat Will share more details about how police unraveled this case.
B
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B
They took out reciprocal life insurance policies on each other. And then he started talking to her about, you know, I used to do some stockbrokering and you know, investment work and let' slet's get in on, let's do some day trading. Well, okay. She liked him enough. They were friends. They had a short lived romance apparently. And what did she do? Just as the prosecutor said, she was in it for a relationship. He was in it for the money. This is a woman, Deborah, who mortgaged her, refinanced her house not once but twice.
A
Wow.
B
A woman who was starting to take money out of her retirement. A woman who borrowed some money from.
A
Her father and we're talking hundreds of thousands of dollars now.
B
Yes, yes. According to the prosecution, she eventually forked over 300 plus thousand dollars and lost it. But just to simplify the whole matter and let's make it clear, he was never accused or charged of financial crimes. That is a very delicate, specific kind of thing. To try to go after the murder was so impactful and the evidence was there and I don't think they wanted to mess up this case going for financial crime. So he was never accused of that. That's a very complicated thing to pursue. However he set it up that he would do all the trading. Isn't that interesting? She didn't. So she had her own account. They had the joint investment account. And then Mr. Landeros had his own V of A account.
A
Yeah. Which she had no idea that was happening.
B
All this money into the shared account which she had no access to. Red Flag. Red flag. Right. But she trusted him.
A
Right.
B
And showing no guilt to her for it when she finally does get suspicious. So that's how it all begins.
A
He did present himself as this sort of like very, very slick guy who was very financially adapted.
B
Yes. Uh huh.
A
How could she fall for something like that as bright as she was?
B
You cannot disparage a woman who falls for this because it is as scarring and damaging trap as physical abuse in some ways where you don't know whether you're coming or you second guess yourself all the way along. Which sue did. Yet she fell in and she could not. She treaded water and couldn't get out. And he knew it. And to answer your question, he was very charming and a lot of people thought he was very attractive and he was very chiseled. Nice suit.
A
He probably knew how to get to her. He knew how to speak to her in a way that just made her sort of butter in his hands. You talked about how the relationship was a short lived romance. But what wasn't completely clear is was she just sort of blinded by love or was it after a while? Because there was evidence, there were emails between them. She was starting to get anxious about her financial situation and that was revealed in our report. In fact, she even writes, I don't know how I allowed myself to get into this mess that I'm in. I just want out of the whole situation. So was she blinded by love or was it just she got in so deep and it was hard for her to try to dig out.
B
You know, it's hard to know what was in her brain. But I can tell you about one email that I think says it all and answers your question. So through this course of time, a couple of years that he's doing this to her, she starts showing, I got to get, like you mentioned, got to get out of this. I can't believe you even sat at my kitchen table and told me you didn't Care that you'd spent the money ghosting her doing all these things. And she's like, I can't sleep. I can't eat. I can't think straight. I'm so in debt. What am I going to do? How am I going to pay my mortgage Yet? Deborah, through all of that, starting to see the problems, right? And you're hoping, okay, get out, Sue.
A
Get out.
B
Get out. Get out now.
A
Get out of the house.
B
What does she say? Shortly before she's murdered, she writes an email that says, I am still trying to find ways. I'm paraphrasing. I don't have it in front of me. I'm still trying to find ways to make this happen for us.
A
Yeah. In fact, she wrote, I am committed to doing what I can do so that we can both be successful and happy.
B
Thank you. I'm so glad you have that in front of you, because I think that says it all. Deborah. She's gone through the anguish. Her friends, Larry March, her good friend, talked about how he'd never seen her like this. She would cry. She was not a crier. She would yell. She would snap. She was psychologically degrading right before her friend's eyes. But another thing, Deborah, is she never brought him around much, okay? And she didn't tell her friends about the financial investments. And that's part of the whole process. He had manipulated her enough that she, in her intelligent mind, knew. Okay, you know, there's something's wrong here. But it's that other part of the brain that was saying, just, you know, just keep it quiet.
A
Keep it between us. And also, too, there's that embarrassment factor, too. I think people hit a point where if you are somebody who's very well regarded and accomplished, and you should know better after a certain point, even if you do know better, it's embarrassing to let friends and family know that you're caught up in this kind of thing.
B
You are so right. But, Deborah, listen to what we're both saying. That she is somewhere aware. She knows there's a part of that intelligent brain that's saying, oh, my God, what have you gotten into? But there is that part that none of us, no scientists, no psychiatrist, nobody can. Can. Nobody can really understand why we continue to accept the torment. And she did. And she did. And that's what I want. All people, not just women. I mean, some men can fall into this trap, too. But I think, particularly for women, women were particularly vulnerable. When someone has a hold of your brain and your heart like that, the.
A
Psychology of it all. We're going to talk more about that with Pat. Lamar. Don't go anywhere.
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A
Welcome back to 2020 the After Show. I am talking with our contributor Pat Lama about this riveting story we just reported on 2020 about the case of Sue Markham, an esteemed professor at American University who was found dead in her basement. And then, of course, investigators began to uncover really a shocking relationship between her and a man who was her yoga instructor, Jorge Landeros. So, Pat, let's talk about Landeros, because this is a man who, as we said, was very charming. He seemed to have some financial knowledge. He spoke Spanish. He helped her with Spanish. But he went back and forth between the US And Mexico, and that is how he was able to elude police ultimately, when they began to realize that he. He was the guy they were looking for.
B
Yes. After the murder, Jorge went to Mexico, but all along he had been traveling back and forth to see Sue. This was a common thing for him. And so after her murder, he did go back to Mexico, back and forth to see his father in El Paso, but then back to Mexico. The Mexican police were on the lookout for him at the behest of investigators.
A
On the east side authorities.
B
Yes. And so when he crossed the border, they stopped him. Oh, and he was a charming delight. You know, he. They brought him into the office. He said, yeah, you know, whatever you need. I wasn't, I hadn't seen sue in a long time. And I'm happy to help.
A
Completely cooperative.
B
Yeah, but that was, you know, of course, a ruse. But he did offer a buccal swab without any problem. But also, the very astute police officer watched him throw a Coke can away. And he picked it, had someone pick it up, pluck it out of the basket just to have. And that's when they found out, once the DNA results came in, that his DNA was on the tequila bottle that was one of the deadly weapons on shot glasses, where it appears, like the detective said, whoever killed her shared a drink with her because it was on the glasses and under her fingers. Later on, with new technology, they were able to confirm that it was Landeros who actually had his hands on her neck that ultimately killed her.
A
Yes. Well, in the meantime, though, police are writing him emails, trying to get him to answer some questions. In fact, let me read one. One of his responses. He says, of course, you are cordially invited to cross the same bridge in the opposite direction and meet me at Sanborn's, a great cafe and restaurant here in Juarez. And we can talk shop all you want. It's best if you come on a Sunday. We can have brunch. It will, of course, be my treat. Yours, Jorge. That is so chilling. I mean, it almost has a Hannibal Lecter sound to it, doesn't it?
B
Oh, yeah. Oh, that's a. That's a good analogy. Oh, he was Mr. Taunt. But you know why? Because he was in Mexico. He even alluded, said something to the effect of don't have it verbatim, you know, I think, let the Mexican authorities do what the Mexican authorities want to do. He really felt that he was invincible, and I think he really felt it was nobody was ever going to get him, and he was just throwing out these little teases to the police, like.
A
Come and get me, almost cat and mouse, like. And pat you. And you've covered all kinds of stories like this before. Talk about the psychology of a response like this. The kind of person who really does, as you say, seems to feel invincible. I mean, to play around with police like this, it's astonishing.
B
It is a common trait with violent criminals and murderers who think they'll never be caught. And also another psychological element is somehow they justified in their mind what they've done. These kinds of mentality, these kinds of personalities think that the world can't touch them. And he was. And there's an arrogance. Right. We've seen that in all the cases we covered. There's a certain arrogance in a lot of killers. He had that arrogance. He was even arrogant in the courtroom. He was very, you know, chest puffed out.
A
He couldn't believe he was on trial.
B
No, I think he just sat there and thought, this is beneath me. You didn't see a smile. You didn't see a grimace. You saw him. He stared into the gallery a lot. Like he stared toward us a lot. He listened to everything he said. Nothing. There's an arrogance and there's a sense of invincibility, and I see it a lot. But in this guy, it was times 10, times 10.
A
Well, before we get to that, I do want to talk about the dual identity, because not only did he flee to Mexico. And he lived for years, alias Leon Ferrara.
B
Ferrara, yes.
A
And continued to work as a yoga instructor. And people were just absolutely stunned who.
B
Were in his environment, melted in his presence. I mean, when his students were interviewed to a T, not him. Oh, there's no way. This man was so spiritual and so Zen and he was a poet. And he said he didn't need worldly goods and that he had these two little Pomeranians, they followed him like ducks. And he was just so cerebral and wise. And that's again, I think we are writing the, you know, the handbook for predators here today in this podcast, because these are all the usual signs, people. And that's how he gets in by.
A
The charm things for people to realize. Well, this case went on, and fortunately, authorities didn't let it go. It went on for years. Jorge Landeros was finally apprehended in Guadalajara in 2020. He was extradited to the United States. That was a big turning point, particularly for investigators who had been on this case for a long time.
B
He was on the 10 most wanted list. He was just guffawing at American authorities like, you know, you'll never get me. He probably got very comfortable, Deborah, where he just felt that maybe eventually the heat was off. But lo and behold, they got him.
A
Pat, thank you for your take on this story. And there is more to come. There is the sentencing of Jorge Landeros. We're going to take you there. When that happens, we'll find out whether Sue Markham's family actually finds justice in this case. So we thank you for being with us. And of course, don't forget, you can always find 2020 on ABC on Friday nights. And you can stream episodes like this on Disney and Hulu. We'll see you next time. Starting a business can seem like a daunting task unless you have a partner like Shopify. They have the tools you need to start and grow your business. From designing a website to marketing to selling and beyond, Shopify can help with everything you need. There's a reason millions of companies like Mattel, Heinz and Allbirds continue to trust and use them. With Shopify on your side, turn your big business idea into sign up for your $1 per month trial@shopify.com specialoffer.
Host: Debra Roberts (A)
Guest Contributor: Pat LaLama (B)
Release Date: January 19, 2026
This episode of the 20/20 After Show, hosted by Debra Roberts with contributor Pat LaLama, delves into the shocking case of Sue Marcum—a respected American University accounting professor murdered in her Bethesda, Maryland home in 2010. Beyond recounting the harrowing investigation, the discussion explores the psychology behind Sue’s manipulation by Jorge Landeros—her friend, yoga instructor, and ultimately her killer. The team goes behind the headlines to dissect red flags, financial deception, vulnerabilities of even the brightest victims, and the relentless police work that brought a fugitive to justice across international lines.
For full coverage and updates, stream 20/20 episodes on ABC, Disney, or Hulu.