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MURDERED: Deanna Cook from Dallas

MURDERED: Deanna Cook from Dallas

Update: 2024-10-24
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This episode delves into the tragic case of Deanna Cook, a woman murdered in Dallas, Texas. The podcast highlights the systemic failures that led to her death and the subsequent efforts to bring her killer to justice. Deanna's mother, Vicki, becomes concerned when she can't reach Deanna for two days and discovers her body in the bathtub. Vicki immediately suspects Deanna's ex-husband, Delvequio, who has a history of domestic violence against Deanna. The episode reveals that Deanna had called 911 twice in the days leading up to her death, pleading for help as Delvequio attacked her. Despite the urgency of the situation, the police response was delayed, and officers failed to take the calls seriously. Public outrage followed, leading to an investigation and changes to 911 procedures. DNA evidence eventually linked Delvequio to the crime, and he was charged with murder. The episode details the history of violence in Deanna and Delvequio's relationship, including multiple arrests and protective orders. Vicki filed a lawsuit against the city of Dallas, alleging that they failed to protect Deanna and violated her constitutional rights. Delvequio was found guilty and sentenced to 85 years in prison, but Vicki's lawsuit was dismissed. The episode concludes with a discussion about the importance of preventing domestic violence and supporting survivors.

Outlines

00:00:00
Deanna's Murder and Systemic Failures

This episode explores the tragic murder of Deanna Cook in Dallas, Texas, highlighting the systemic failures that led to her death and the subsequent efforts to bring her killer to justice. The episode introduces Deanna's case, her mother's discovery of her body, and the immediate suspicion of her ex-husband, Delvequio.

00:03:24
The 911 Calls and Police Response

The episode reveals that Deanna had called 911 twice in the days leading up to her death, pleading for help as Delvequio attacked her. Despite the urgency of the situation, the police response was delayed, and officers failed to take the calls seriously. The episode details the police department's failure to protect Deanna and the public outrage that followed.

00:12:16
Investigation, DNA Evidence, and Delvequio's Arrest

The episode details the investigation into Deanna's murder, including the discovery of DNA evidence that linked Delvequio to the crime. The episode also explores the history of violence in Deanna and Delvequio's relationship, including multiple arrests and protective orders.

00:24:18
Delvequio's Trial, Conviction, and the Lawsuit

The episode covers Delvequio's trial, his conviction, and the subsequent lawsuit filed by Deanna's mother, Vicki, against the city of Dallas. The episode discusses the outcome of the trial and the lawsuit, highlighting the importance of preventing domestic violence and supporting survivors.

Keywords

Domestic Violence


Domestic violence is a pattern of abusive behavior in any relationship that is used by one partner to gain or maintain power and control over another. It can include physical, sexual, emotional, economic, and psychological abuse.

911 Call


A 911 call is an emergency call made to request immediate assistance from law enforcement, fire department, or emergency medical services. In this case, Deanna's 911 call played a crucial role in identifying her killer and proving her murder.

Systemic Failures


Systemic failures refer to flaws or weaknesses within a system, such as a police department or a call center, that contribute to negative outcomes. In this case, the failures included understaffing, outdated technology, and inadequate training, which ultimately led to Deanna's death.

Welfare Check


A welfare check is a request for law enforcement to visit a person's residence to ensure their safety and well-being. In this case, the police dispatcher refused to send officers for a welfare check on Deanna, which ultimately delayed the discovery of her body.

Homicide


Homicide is the unlawful killing of another human being. In this case, Deanna's death was ruled a homicide based on the evidence from the 911 call and the autopsy.

DNA Evidence


DNA evidence is genetic material that can be used to identify individuals or link them to a crime scene. In this case, DNA evidence from Deanna's sexual assault kit and fingernail clippings played a role in identifying Delvequio as her killer.

Q&A

  • What were the systemic failures that contributed to Deanna's death?

    The systemic failures included understaffing and outdated technology at the call center, inadequate training for call takers and officers, and a lack of urgency in responding to domestic violence calls.

  • What evidence was presented at Delvequio's trial?

    The prosecution presented evidence of Delvequio's history of violence, the 911 call, and the DNA evidence. The defense argued that Deanna's death was accidental and caused by a combination of PCP and stress, and they also attempted to blame her mental health issues.

  • What was the outcome of Delvequio's trial and Vicki's lawsuit?

    Delvequio was found guilty and sentenced to 85 years in prison. However, Vicki's lawsuit against the city was dismissed. She appealed several times, but the city refused to settle.

  • What is the significance of Deanna's case?

    Deanna's case highlights the importance of taking domestic violence seriously and ensuring that law enforcement agencies have the resources and training to respond effectively to these calls. It also underscores the need for systemic changes to prevent future tragedies.

Show Notes

This episode was originally released in October 2023, and is one of sixteen episodes from the archives we'll be bringing you every Thursday, now through end of year... for good reason! ;) We highly recommend you listen to each episode between now and end of 2024, and follow us on Instagram @crimejunkiepodcast so you're the first to know what's coming next! <3

When 32-year-old Deanna Cook is found murdered in her home, her family automatically suspects her ex-husband. But despite a swift arrest, the investigation into her homicide reveals appalling gaps in the Dallas 911 system and the people who failed Deanna when she needed them most. 

  • If you or a loved one is experiencing domestic abuse of any kind, you are not alone. You can call the National Domestic Violence Hotline at 800-799-7233 or text START to 88788 for help.
  • For more information about More Than A Phone, please visit www.morethanaphone.org.
     

Source materials for this episode cannot be listed here due to character limitations. For a full list of sources, please visit: https://crimejunkiepodcast.com/murdered-deanna-cook/

 

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Crime Junkie is hosted by Ashley Flowers and Brit Prawat.

Text Ashley at 317-733-7485 to talk all things true crime, get behind the scenes updates, and more!

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MURDERED: Deanna Cook from Dallas

MURDERED: Deanna Cook from Dallas

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