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[The Brutal Attack on Brittany: A Journey of Survival and Forensic Persistence]-[A Single Drop of Blood]

Anatomy of Murder · B2 · 2020-12-02

True crime
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📋 Summary

The Horror of September 11th

On September 11, 2008, Diane Marcel returned to her Albuquerque home to discover a scene of absolute carnage. Her 17-year-old daughter, Brittany, was being brutally beaten by an intruder wielding a shovel. Diane’s frantic 911 call captured the raw terror of the moment, providing investigators with “present sense impressions” and “excited utterances”—legal classifications that would later prove vital for trial. The assailant, however, managed to escape, leaving behind a scene that was both a “treasure trove” and a forensic nightmare due to the contamination of DNA evidence from the household.

The Cold Case and the John Doe Indictment

Despite the collection of DNA from a shard of glass at the crime scene, the investigation hit a dead end when the profile failed to yield a match in the FBI’s CODIS database. Brittany survived the attack, but she suffered catastrophic injuries, including a broken jaw and severe brain trauma, which left her in a medically induced coma and stripped of her memory. Recognizing that the statute of limitations was approaching, the district attorney’s office took the innovative step of filing a “John Doe DNA indictment.” By indicting the DNA profile itself, they effectively “stopped the clock,” ensuring the perpetrator could be held accountable whenever he was eventually identified.

Forensic Innovation: Hypnosis and Snapshot Composition

In 2013, Detective Jodi Gonterman took over the case, driven by her own personal connection to the trauma of losing a sibling to violence. Determined to break the case, she employed unconventional methods. She utilized investigative hypnosis to help Brittany unlock suppressed memories. While controversial and often inadmissible in court, the session yielded specific details regarding the attacker’s muscular build and distinct almond-shaped eyes. Furthermore, investigators used Parabon Snapshot technology to generate a physical composite of the suspect based solely on the DNA found at the scene, providing a crucial “big red flag” when identifying potential leads.

The Breakthrough: Abandoned DNA

Brittany eventually recalled the name “Justin Hansen,” a man who had worked at the same mall and had a history of violent “red flags,” including fraud and a rape case. Investigators tracked Hansen to a McDonald’s, where they surreptitiously collected a cup he had used. This “abandoned DNA” provided the match they needed. Although abandoned DNA is a powerful tool, the legal process required them to secure a court-ordered “known sample” to ensure the evidence was admissible in court. When confronted with the evidence and a photo of Brittany’s hospital-bed injuries, Hansen’s reaction suggested a silent admission of guilt.

Justice Served

In 2017, Justin Hansen was arrested and ultimately pleaded no contest, receiving an 18-year sentence—the maximum penalty available. This resolution spared Brittany the trauma of reliving her ordeal through cross-examination. The case stands as a testament to the power of forensic persistence, the evolution of investigative techniques like Snapshot composition, and the profound resilience of a survivor who, despite losing a part of herself, fought to reclaim her life.

🎯Key Sentences

1
It is one of the more unbelievable scenarios.
2
It's still in progress.
3
I don't know these things.
4
It really was back to square one.
5
So it's a double-edged sword.
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📝Key Phrases

1
walk into a scene of horror
2
shut your door and be free of dangers
3
stop me in my tracks
4
back to square one
5
clinging to life
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📖 Transcript

I'm Scott Weinberger, investigative journalist and former deputy sheriff.
I'm Anastasia Nicolazzi, former New York City homicide prosecutor and host of Investigation.
Discovery's True Conviction.
And this is Anatomy of Murder.
So sit back a second and just imagine you walk into your own home expecting to meet up with your 17-year-old daughter for lunch.
Instead, you walk into a scene of horror.

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