Anatomy of Murder – A Deadly Cocktail - Part 2 (David Castor)
Release Date: August 5, 2025
Hosts: Anna-Sigga Nicolazi and Scott Weinberger

Introduction

In the gripping second part of the two-part series, Anatomy of Murder delves deeper into the chilling case of Stacy Castor, whose calculated actions not only claimed the lives of two men but also endangered her own daughter. Hosts Anna-Sigga Nicolazi, a former NYC homicide prosecutor, and Scott Weinberger, an investigative journalist and former deputy sheriff, unravel the layers of deceit and manipulation that define this tragic story.

The Initial Death of David Castor

On August 22, 2005, 37-year-old David Castor was declared dead after ingesting a lethal dose of ethylene glycol, commonly known as antifreeze. Initially ruled as a suicide by the medical examiner, this determination raised eyebrows among investigators.

Anna-Sigga Nicolazi [02:34]:
"Antifreeze ethylene glycol. It's a horrible way to die. You don't die instantly by any stretch of the imagination."

District Attorney Bill Fitzpatrick and his team in Onondaga County, New York, grew suspicious of the suicide ruling. The prolonged and agonizing nature of ethylene glycol poisoning didn't align with what they knew of David's character and circumstances.

Reopening the Investigation: Mike Wallace's Death

The investigation took a shocking turn when authorities exhumed Stacy Castor's first husband, Mike Wallace, revealing that he too had succumbed to antifreeze poisoning. This discovery marked a pivotal shift from interpreting David's death as a suicide to considering it a homicide.

Scott Weinberger [04:09]:
"But investigators... were unconvinced that David would have intentionally subjected himself to the long and painful death caused by antifreeze poisoning. He was murdered."

Anna-Sigga emphasized the stark similarity between the two deaths, underscoring the improbability of coincidence.

Anna-Sigga Nicolazi [21:33]:
"Two husbands dying under very unusual circumstances of antifreeze poisoning... it's not a coincidence."

The Suspicious 911 Call and the Suicide Note

In September 2007, as scrutiny intensified, Stacy made a 911 call claiming that her 20-year-old daughter, Ashley, had overdosed on a dangerous mix of alcohol and prescription pills. Accompanying this call was a detailed suicide note where Ashley allegedly confessed to murdering both her father, Mike Wallace, and her stepfather, David Castor.

Scott Weinberger [06:03]:
"According to Stacy Castor's 911 call, her 20-year-old daughter had lost consciousness as a result of what she claimed was a cocktail of alcohol and prescription pills."

Upon waking, Ashley vehemently denied writing the note and accused her mother of framing her.

Anna-Sigga Nicolazi [07:45]:
"She said, 'I have no idea what you're talking about. There's no way in the world I'm trying to kill myself.'"

Stacy’s Orchestrated Poisoning of Ashley

Investigators suspected Stacy Castor of drugging Ashley to fabricate a suicide attempt, thereby shifting suspicion onto her daughter. Toxicology reports confirmed that Ashley had consumed a significant amount of potent drugs without her voluntary intake.

Anna-Sigga Nicolazi [10:26]:
"When we saw Ashley's drug screen... it looked like something out of a doctor's office. Every drug imaginable."

Stacy's calculated moves included inviting Ashley over under the guise of celebration and persistently offering her poisoned drinks, one even with instructions to drink via a straw directly to her throat.

Anna-Sigga Nicolazi [09:22]:
"I remember, I was at her house, and she kept offering me drinks... I didn't know what she was talking about, that she wasn't gonna be around for a while."

Unmasking the Forged Suicide Note

A turning point in the investigation was the forensic analysis of the suicide note. Experts discovered a defect in the printer used to type the note, linking its creation directly to Stacy Castor's residence. Moreover, a wiretap revealed Stacy composing the note during a call with a friend, exposing her deceit.

Anna-Sigga Nicolazi [18:33]:
"You could hear... the clicking of a keyboard as she's talking to her friend. But clearly it was Stacy cold-bloodedly drafting the note."

Details within the note, such as the use of rat poison alongside antifreeze, further implicated Stacy, as only the murderer would possess such specific knowledge.

Anna-Sigga Nicolazi [11:33]:
"In addition to antifreeze, the author of the note also points out that he was given rat poison. So, you know, we look around at each other and say rat poison first."

The Trial: Building a Case Against Stacy Castor

District Attorney Bill Fitzpatrick faced the formidable task of proving Stacy's guilt primarily through circumstantial evidence. The prosecution highlighted Stacy's pattern of using antifreeze as a murder weapon, the forged suicide note, and her calculated attempts to frame Ashley.

Anna-Sigga Nicolazi [21:05]:
"Starting with the scene itself. The unlikelihood of him using antifreeze as a methodology... the turkey baster with David's DNA."

The defense proposed an alternative theory, suggesting that Ashley was the true perpetrator, motivated by jealousy over familial attention.

Anna-Sigga Nicolazi [35:00]:
"The defense argued that in regards to Michael Wallace's murder, that Ashley... was likely motivated by jealousy of her younger sister."

However, the prosecution adeptly dismantled these claims by presenting alibi evidence and demonstrating the implausibility of a 12-year-old committing such sophisticated crimes.

Conviction and Sentencing

After a high-profile trial marked by intense media scrutiny and courtroom drama, the jury deliberated for just one day before reaching a unanimous verdict. Stacy Castor was found guilty of the murders of David Castor and the attempted murder of Ashley.

Anna-Sigga Nicolazi [39:04]:
"They found her guilty of everything. The murder of David, the attempted murder of Ashley, and the forging the will."

Stacy received a combined sentence of over 51 years to life in prison. She remained unrepentant, maintaining her innocence until her death in 2016.

Anna-Sigga Nicolazi [40:35]:
"This is the first time a mother had ever tried to frame a child for a murder that she committed."

Aftermath: Lives Forever Changed

The repercussions of Stacy Castor's actions left indelible scars on her daughters, Ashley and Bree. Despite the trauma, both women have grown into successful individuals, finding strength and support through the judicial system and their community.

Anna-Sigga Nicolazi [41:10]:
"They're doing great. I'm proud of both of them."

Reflecting on the concept of closure, both host and guest acknowledge that while justice was served, the emotional wounds persist.

Anna-Sigga Nicolazi [42:13]:
"We don't bring closure, but we bring that sense of justice."

Reflections and Conclusions

Ashley Castor poignantly questions the motivations behind her mother's heinous acts, grappling with the loss and betrayal inflicted upon her.

Ashley Flowers [43:05]:
"The biggest question I ask is why? Why did she do these things?"

This case exemplifies the dark complexities of human behavior, where a trusted family member orchestrates elaborate schemes to conceal their crimes. Anatomy of Murder not only recounts the factual timeline but also explores the emotional and psychological aftermath for the victims, emphasizing the relentless pursuit of justice in the face of unimaginable betrayal.

Key Takeaways

• Evidence and Forensics: The meticulous forensic analysis played a crucial role in dismantling the forged suicide note and establishing Stacy's link to the murders.

• Circumstantial to Conviction: Despite lacking direct evidence, the cumulative circumstantial evidence effectively proved Stacy's guilt.

• Impact on Victims: The enduring trauma experienced by Ashley and Bree highlights the profound personal costs of such crimes.

For those seeking a deeper understanding of this harrowing case, listening to the full episode of Anatomy of Murder provides a comprehensive exploration of the events, evidence, and human stories intertwined within.