DOUBT: The Case of Lucy Letby – Episode 5: The Defense

Host: Amanda Knox
Podcast: iHeartPodcasts, Vespucci
Air Date: March 24, 2026

Episode Overview

In this pivotal episode, Amanda Knox dives into the defense case of Lucy Letby — a British nurse convicted of murdering seven infants and attempting to murder seven more. Knox, herself wrongfully convicted in a globally-watched case, explores the courtroom drama, the defense strategy, the scrutinized evidence, and the fierce debate over whether justice was truly served. Testimonies, expert (and non-expert) opinions, narrative framing, and the gendered lens of criminal justice are all brought into question.

Key Discussion Points & Insights

The Complexity and Atmosphere of the Trial

• Experienced Court Reporting: Kim Pilling (court reporter) emphasizes the trial's complexity:

  "In effect was 17 trials in one. Really. Each day we were full on, so to speak." [04:15]

• Expert-Heavy Proceedings: The sheer volume and technicality of medical evidence made proceedings difficult to follow, particularly for the jury.

Lucy Letby's Testimony and the Decision to Testify

• Risk of Testifying: In the UK, defendants may be judged harshly for not testifying. Knox reflects on her own trial and the impossible expectations this placed on defendants, particularly women:

  "Every factual mistake in your testimony is an opportunity for the prosecution to call you a liar." [06:54]

• Letby on the Stand:
  • Chose to sit in the witness box before others entered, avoiding the spectacle of being escorted in as a prisoner. [08:16]
  • Direct, clear, but reserved style:

    "She was very direct, gave clear answers, didn't deviate from the question, but again, not particularly expressive." – Kim Pilling [14:09]

• Denial of Guilt:

  Defense: "Did you ever do anything that was meant to hurt any of them?"
  Lucy: "No. I only ever did my best to to care for them." [10:06]
  Defense: "Did you ever want to hurt any baby you looked after?"
  Lucy: "No. That's completely against everything that being a nurse is. I'm there to help and to care, not to harm." [10:18]

New Defense Counsel & Problems with the Original Defense

• Mark McDonald’s Background:
  • Former operating theater assistant, extensive hospital experience before becoming a barrister. [15:17]

  "I think this is a miscarriage of justice." – Mark McDonald [15:17]

• The Media Narrative:

  "From the moment she was arrested, it became a story in the mainstream media...She was described as evil...It became about dismantling her as an individual." – Mark McDonald [16:18]

• Defense Approach: Multi-pronged, focusing on legal arguments, the narrative, and exposing issues in the evidence. [16:52, 39:00]

Evidence and Cross-Examination

• Prosecution’s Lack of Direct Evidence:

  "No witnesses, no forensic evidence, no cctv, you know, no mass amount of drugs that have gone missing. In fact, the opposite. She was highly regarded and seen by many on the unit as an excellent nurse." – Mark McDonald [18:36]

• Damning "Confession" Notes:

  • Post-it notes found under Letby’s bed used as key prosecution evidence.

  Prosecutor: "You write down at the top right hand corner, don't you?"
  Letby: "Yes."
  Prosecutor: "And that's true, isn't it?"
  Letby: "No. That's how I felt at the time. I was not good enough and I must be an awful person." [19:10]

• Counterpoint – Writing Down Feelings is Therapy:

  • Neonatal nurse Jenny Harris:

    "I've been to therapy...they've told me to write things down on what I'm thinking and what I'm feeling, but it doesn't mean it's right...As soon as I heard that she'd written these post it notes, I was like, well, I've done that." [21:28]

• Expert on False Confessions:

  "This is not a confession and should never have been treated as a confession, in fact, should never be put before the jury." – Quoting UK's leading expert via Mark McDonald [22:29]

Defense Case and Critique of the Prosecution's Medical Experts

• Notable Cross-Examination Battle:

  • Dr. Dewi Evans, lead prosecution expert, was accused of bias by defense counsel Ben Myers.

    Defense: "I'm suggesting to you, Dr. Evans, that you are reaching for things that support the allegation rather than reflecting the facts." [30:26]
    Dr. Evans: "Well, I disagree with you. I have just explained the facts." [30:35]

  • Evans' certainty was a "red flag" for several observers and critics:

    "He's absolutely certain that it's deliberate harm and has since gone on podcasts saying that Lucy Letby is evil." – Dr. Phil Hammond [27:39] "He's also on record of saying, I've never lost a case...he's the hired gun really for the prosecution." – Michelle Warden [28:25]

• Defense Only Called One Other Witness – A Plumber:

  • The plumber testified about unit sewage issues, highlighting hospital conditions [23:45]
  • "Painting a picture of a sick hospital was important." – Amanda Knox [24:00]
  • Critics (including Dr. Mike Hall, defense medical advisor) argue failure to call more expert defense witnesses was a grave error:

    "I couldn't understand why on earth you would not call expert witnesses, particularly given what I'd heard by other expert witnesses. A significant proportion of what some of the other expert witnesses said I disagreed with." – Dr. Mike Hall [36:39]

• Controversy Over Key Medical Evidence:

  • Dr. Hall disputed prosecution claims that "babies don't suddenly collapse":

    "That's not the case in neonatal care. Babies do suddenly change, and they can change quite quickly when you’re not expecting them to." – Dr. Mike Hall [37:21]

  • On air embolism theory:

    "I thought all of the conclusions relating to air embolism were not based on credible evidence." – Dr. Mike Hall [37:57]

Narrative and Public Perception

• Changing the Narrative:

  • McDonald is working to shift public and legal perception for a fairer appeal process [39:00–39:12]
  • "She was one of the most qualified nurses on the unit, which is why she got all the seriously ill patients...always sort of almost constantly on call and constantly there." – Mark McDonald [39:12]

• The Gendered Nature of Public and Criminal Justice Response:

  • Knox draws parallels to her own experience, remarks on the unique scrutiny female defendants face:

    "One thing I've noticed is that it's more common for women to face character assassination than men. They have to deal with unequal scrutiny when they are faced with answering for a crime, innocent or not." [40:10]

  • Mark McDonald:

    "Years after this conviction is overturned, people will be talking about issues of misogyny and feminism that I think polluted the whole of this case and the narrative behind it." [41:31]

  • Baroness Helena Kennedy (lawyer):

    "It's about basing attitudes towards women in the stereotypes and the myths that exist about, about womanhood...The ways in which it is assumed that women will manipulate and lie..." [42:24]

  • Amanda Knox and her producer discuss male and female stereotypes during trials, how women are condemned no matter how they present:

    "There’s just no winning when you're a woman...anything that you do or say or appear to be can be used to find fault in you." [44:25–44:28]

Notable Quotes & Memorable Moments

• "No direct evidence of Lucy doing anything wrong. In fact, the opposite." – Mark McDonald [18:36]
• "I've been to therapy...they've told me to write things down...As soon as I heard that she'd written these post it notes, I was like, well, I've done that." – Jenny Harris [21:28]
• "This is not a confession and should never have been treated as a confession." – Mark McDonald citing expert opinion [22:29]
• "If he had said...the most likely cause...is deliberate harm, then that's absolutely fine...But what he said, he's absolutely certain...and has since gone on podcasts saying that Lucy Letby is evil." – Dr. Phil Hammond [27:39]
• "I couldn't understand why on earth you would not call expert witnesses...A significant proportion of what some of the other expert witnesses said I disagreed with." – Dr. Mike Hall [36:39]
• "The justice system is not gender blind." – Amanda Knox [41:31]
• "Years after this conviction is overturned, people will be talking about issues of misogyny and feminism that I think polluted the whole of this case and the narrative behind it." – Mark McDonald [41:31]

Key Timestamps

• [03:53 – 04:36]: Introduction to trial’s complexity and volume of medical evidence (Kim Pilling, Amanda Knox)
• [08:47 – 10:30]: Lucy Letby’s testimony highlights and denials of guilt
• [13:52 – 14:17]: Discussion of Lucy’s demeanor on the stand
• [15:08 – 16:18]: Mark McDonald’s background and reasons for taking the case
• [18:36 – 22:29]: Debate over lack of direct evidence and the meaning of the "confession notes"
• [23:35 – 24:37]: Criticism of defense strategy and the significance of hospital conditions
• [25:05 – 27:39]: Scrutiny of prosecution’s medical "expertise"; Dr. Evans controversy
• [36:39 – 37:57]: Dr. Mike Hall discusses the importance of calling expert witnesses and the disputed medical evidence
• [39:00 – 41:31]: Mark McDonald and Amanda Knox on reframing the narrative and systemic misogyny
• [42:24 – 45:10]: Baroness Helena Kennedy and Amanda Knox examine the gendered treatment of women in criminal justice

Conclusion

This episode provides a meticulous, open-ended look at Lucy Letby’s defense, offering insight into legal tactics, the fraught and sometimes dubious nature of trial evidence, and the social narratives—especially concerning women in the justice system—that shape guilt and innocence. With expert commentary, personal accounts, and a critical lens toward both the prosecution and defense, Amanda Knox urges listeners to recognize the complexity and the possibility for doubt in even the most "open and shut" cases.

Next episode preview: The focus turns to Lucy Letby's sentencing and the aftermath, confronting the totality of societal and judicial response.