Serial Killers & Murderous Minds

Episode: The FBI Affair Murder Pt. 1

Hosts: Vanessa Richardson & Dr. Tristin Engels
Date: February 9, 2026

Main Theme / Episode Overview

This episode kicks off a two-part exploration into the case of Mark Putnam, the first FBI agent in U.S. history to be convicted of murder. Through a blend of true crime narrative and forensic psychology, hosts Vanessa Richardson and Dr. Tristin Engels analyze how Putnam’s drive, identity, and blurred boundaries led him from small-town recruit to infamy. They focus on his ambition, vulnerability to pressure, and ultimately the destructive entanglement with his informant, Susan Smith.

Key Discussion Points & Insights

1. Mark Putnam’s Early Life and Competitive Identity

• Childhood & Athleticism:
  • Mark’s upbringing in a middle-class Connecticut family entrenched him in a mindset of self-reliance and fierce competitiveness.
  • Soccer became his formative arena, not just for talent but psychological strategy: “He knew that to win, he had to understand who he was up against. So he studied his opponents and learned their weaknesses.” (Vanessa, 05:15)
• Psychological Impact:
  • Dr. Engels examines how competitive sports can reinforce a worldview tied to validation through performance and the risk of carrying that mentality into adult moral decision-making.
    • “When winning becomes everything, there's a real risk of developing a worldview where outcomes matter more than processes or boundaries.” (Engels, 06:38)

2. Transition to Ambitious Federal Agent

• Academic and Emotional Struggles:
  • Mark focused his energy on criminology studies after his father’s death, further suppressing vulnerability while striving in his chosen path.
• Persistence and Patience:
  • Shoulder injury delayed his FBI Academy entry; he took a clerical job at the New Haven FBI as a strategic step.
  • Mark’s wife, Kathy, played a pivotal role, advocating for his candidacy and effectively bending the system: “The intervention that she did doesn't necessarily undermine him. It just confirms that the system can be pressured, can be appealed and ultimately bent in his favor.” (Engels, 13:50)
• Psychological Analysis:
  • Dr. Engels explores the dangers in internalizing the idea that rules are flexible if one pushes hard enough, especially once in a position of authority.

3. Pikeville Assignment—Isolation & Initial Ethical Weaknesses

• Dream vs. Reality:
  • Mark’s first assignment, in Pikeville, Kentucky, was a letdown—he felt overlooked, as he was valued more for his clerical skills than agent capabilities.
  • The combination of isolation, unmet expectations, and family adjustment strain in a small, under-resourced office created internal and external stressors.
• Informant Dynamics with Susan Smith:
  • Mark sought mentorship in town and was introduced to Susan Smith through Deputy Bert Hatfield. Susan, poor and marginalized, became Mark’s key informant in the “Cat Eyes” Lockhart bank robbery case.
  • Risky boundary blurring began immediately—Mark answered Susan’s personal questions, rationalizing her flirtation instead of documenting the behavior or escalating it:

    “You do not reveal personal information in professional relationships in forensic, correctional or law enforcement settings...Answering personal questions crosses into over-familiarity...there's leverage.” (Engels, 26:12)

4. Case Success and Increasing Personal Complicity

• Cat Eyes Captured:
  • With Susan’s information, Mark caught Lockhart after a string of robberies.
• Validation and Insecurity:
  • The case’s outcome hinged on Susan's information, not Mark’s investigative prowess—a blow to his self-concept as a self-made winner.

    “He didn't outthink or outmaneuver Cat Eyes on his own. He needed Susan, much like how he needed his wife Kathy, to get into the academy.” (Engels, 30:58)

  • Engel’s analysis: This may feed a dangerous belief that “outcomes matter more than anything else,” potentially loosening moral boundaries. (Engels, 32:05)
• Further Boundary Crosses:
  • Mark paid Susan $5,000 for her help, outside standard procedure. Dr. Engels explains: “Paying her personally crossed a line that he can't uncross. If she reports him, his career’s over. Keeping his job now depends on keeping her satisfied.” (Engels, 33:32)

5. Emotional Entanglement, Rising Scandal, and Collapse of Professionalism

• Susan’s Attachment & Mark’s Avoidance:
  • Susan developed fixation beyond informant-agent; Mark’s wife, Kathy, befriended Susan out of kindness—tangling their personal relationships.
  • Mark ignored warning signs as the relationship threatened both his career and family.
• The “Setup” and Psychological Dynamics:
  • Susan offered sex as emotional relief for Mark’s growing stress—a classic case of compromised authority seen often in corrections and law enforcement:

    “Her aim appears to be attachment...she likely saw security and stability and safety in Mark. But Mark had already been blurring boundaries from the beginning...If he rejects her, he risks the case and his job. If he accepts, he compromises himself further…” (Engels, 38:40)

• Rumors and Consequences:
  • An anonymous tip of an affair reached Kathy, causing a major rift at home, even without proof.
  • Mark’s coping strategy became denial and damage control, rather than ethical accountability—a pattern Dr. Engels identifies as a sign of increased desperation and loss of control.

6. The Affair and Its Fallout

• Crossing the Ultimate Line:
  • Amid harassment from locals and intense isolation, Mark succumbs to physical involvement with Susan: “...According to Mark, Susan leaned in and kissed him. And he let her. With all the stress he was under, his moral compass had...completely blurred. Once he and Susan locked lips, Mark finally felt a semblance of relief.” (Vanessa, 44:58)
  • They began an affair, with multiple encounters.
• Psychological Dissection:
  • Dr. Engels explains the affair as both a restoration of Mark’s sense of control and a deepening of the exploitation of Susan:

    “This affair likely felt like a solution...when you consider the power dynamics here...it likely fed his ego...That doesn't excuse the behavior, but it helps explain why someone who valued discipline and image still crossed a line...” (Engels, 47:01)

• The Final Spiral:
  • Mark quickly requested and received a transfer to Miami; his departure devastated Susan, who then discovered she was pregnant and believed Mark was the father.
  • With this revelation, Mark’s anxieties resurfaced—the episode ends with the looming sense that things are about to go from bad to worse, hinting at the impending murder.

Notable Quotes & Memorable Moments

• On formative competitiveness:

  “In competitive sports, he learned to win by studying opponents. Being surrounded by agents while not yet being one of them...These weren't just co workers. They were people who had already achieved what he wanted. And now he could study them.”
  — Dr. Tristin Engels (10:23)

• On boundary crossing with informants:

  “There is an inherent power imbalance between Mark and Susan. He is the federal agent, she is the civilian informant...The moment you blur that line even slightly, you've created vulnerability. And once there's vulnerability, there's leverage.”
  — Dr. Tristin Engels (26:12)

• On the peril of needing validation:

  “Success can activate a fear of loss. So instead of asking, how do I grow in this role? the internal question for some becomes, how do I make sure I don't lose this?...operating from fear instead of purpose...can ultimately distract them just enough to engineer the very outcome they're trying to avoid.”
  — Dr. Tristin Engels (15:36)

• On the “setup” dynamic:

  “With Susan, the goal looks different, but the mechanics are the same. Her aim appears to be attachment...In a setup, once leverage exists, there are really no clean choices left.”
  — Dr. Tristin Engels (38:40)

• On psychological collapse following boundary breaches:

  “Once someone has leverage over you, their expectations just go up.”
  — Dr. Tristin Engels (33:32)

Timeline & Timestamps of Key Segments

• Mark’s Childhood & Sporting Drive: 05:15–07:39
• Sports Psychology & Moral Development: 06:38 / 07:39
• College & FBI Entry: 08:27–13:50
• Psychological Impact of Academy Acceptance/Rejection: 13:50–15:23
• First Assignment in Pikeville: 16:16–20:45
• Forming Ties with Susan Smith: 23:01–26:12
• Ethics of Agent-Informant Relationships: 26:12–28:59
• Cat Eyes Case & Mark’s Insecurity: 28:59–33:10
• Payment to Susan & Beginnings of Compromise: 33:10–33:50
• Entanglement of Mark, Susan, and Kathy: 33:50–38:40
• The “Setup” & Professional Collapse: 38:40–40:29
• Affair and Fallout: 44:58–48:11
• Mark’s Transfer & Susan’s Pregnancy Bombshell: 48:11–end

Concluding Thoughts

This thorough, psychologically rich episode documents Mark Putnam’s downfall not as a simple individual failure, but as the outcome of unchecked ambition, blurred personal and professional boundaries, and escalating ethical compromise. The hosts employ both gripping storytelling and clinical insight to reveal the complex interplay of validation, vulnerability, and catastrophic decision-making. The conclusion sets the stage for Part Two, promising to unravel how the affair devolved into murder, further confronting the haunting question: What makes a killer?