Podcast Summary: 20/20 – Episode: "Three Shots in the Dark"

Introduction

In the gripping episode titled "Three Shots in the Dark," ABC News' iconic true crime series, 20/20, delves deep into the tragic and complex case of Mariah Wilson’s untimely death. Released on June 28, 2025, this episode meticulously traces the events leading up to the murder, the ensuing investigation, and the subsequent legal proceedings that captivated the nation.

Background: Mariah Wilson and the Cycling Community

Mariah Wilson, affectionately known as Mo, was a rising star in the gravel cycling community. Described by friends as "a beautiful woman, super smart, really athletic" (00:10), Mo's passion for cycling was evident from her early days. Growing up in the picturesque landscape of Vermont, she was raised in an active, outdoorsy family. Her father, a champion skier and coach, inspired her dreams of becoming an Olympic ski racer. However, her athletic journey took a pivotal turn when she discovered gravel cycling, quickly excelling in the sport and earning accolades that positioned her as a formidable competitor.

The Fateful Evening: The Murder of Mariah Wilson

On the evening of May 11, 2022, Mariah Wilson was tragically found dead in the bathroom of her friend, Caitlin Cash’s apartment in Austin, Texas. The harrowing 911 call at [04:30] captures Caitlin’s desperate attempt to save Mo, performing over 350 CPR chest compressions in a vain effort to revive her friend. Despite her heroic actions, paramedics declared Mo deceased upon arrival, recognizing immediate signs of foul play, including multiple gunshot wounds.

Investigation: Unraveling the Mystery

The investigation quickly pointed towards a personal motive behind the murder. Initial theories speculated a possible robbery, especially after Mo’s missing bicycle was found discarded in a local bamboo grove (15:45). However, the absence of a visible weapon and the nature of the gunshots suggested a targeted attack.

Key Suspects: Colin Strickland and Caitlin Armstrong

Colin Strickland, a prominent figure in the Austin cycling scene and Mo’s brief romantic interest, was the first suspect. Surveillance footage captured a black SUV matching the description found near Caitlin Cash’s home [23:10]. Upon questioning, Colin exhibited evasive behavior, further raising suspicions. However, alibis verified his presence elsewhere during the time of the murder, shifting the investigative focus to his girlfriend, Caitlin Armstrong.

Caitlin Armstrong, a yoga instructor with a tumultuous relationship history, emerged as a key person of interest. Evidence revealed her jealousy towards Mo’s burgeoning relationship with Colin, coupled with access to firearms—she and Colin had purchased a SIG Sauer 9mm together months prior [47:25]. Additionally, her behavior during police questioning was notably restrained and evasive, heightening suspicions.

Escape and Manhunt: Caitlin Armstrong on the Run

Caitlin’s potential involvement took a dramatic turn when she fled the country shortly after becoming a suspect. Surveillance footage showed her boarding a flight to Costa Rica, instigating an international manhunt. Despite attempts to alter her appearance and disappear into local communities, Caitlin was eventually apprehended in Santa Teresa, Costa Rica, after the U.S. Marshals executed a strategic operation involving undercover tactics [1:30:00].

Legal Proceedings: The Trial of Caitlin Armstrong

Upon her return to Texas, Caitlin faced formal charges for Mariah Wilson’s murder. The trial, marked by extensive courtroom security and emotional testimonies, hinged on both digital evidence and witness accounts. Prosecutors presented compelling evidence, including forensic analysis linking Caitlin to the murder weapon and her presence at the crime scene through surveillance data [2:15:00]. Despite her defense’s claims of insufficient evidence and alternative theories implicating Colin Strickland, the jury found Caitlin Armstrong guilty, sentencing her to 90 years in prison and a $10,000 fine.

Aftermath: Community and Family Reactions

Mariah’s family and the cycling community mourned her loss deeply. Memorial races, such as the first and third annual "Ride for Mo," were established to honor her memory and support her loved ones. Mariah's father, Eric, expressed profound grief and frustration over the events, stating, “She was a phenomenal person. ... You killed her earthly body, but her spirit is so very much alive” [3:00:00].

Caitlin Armstrong’s actions have left a lasting impact on the community, highlighting the destructive power of jealousy and obsession. The case serves as a stark reminder of the complexities inherent in personal relationships and the far-reaching consequences of unresolved emotional turmoil.

Conclusion

"Three Shots in the Dark" offers a comprehensive and emotionally charged exploration of Mariah Wilson’s tragic demise. Through detailed narratives, expert interviews, and poignant testimonials, 20/20 not only reconstructs the events surrounding the murder but also underscores the profound loss felt by those who knew and loved Mariah. This episode stands as a testament to the relentless pursuit of truth and justice, encapsulating the essence of true crime storytelling.

Notable Quotes

• Mariah's Friend Caitlin Cash (00:12:30): "She's a beautiful woman, super smart, really athletic. A wonderful mix of serious and driven, but also up for having a fun time."

• Detective Spitler (00:45:10): "It was personal. Whoever did this stood over Mariah after they had initially shot her and then fired one time directly over her."

• Prosecutor Ricky Jones (1:50:00): "We found DNA on the bike that had a high likelihood to belong to Ms. Armstrong. No one else in the world had a six hour P365 and left their DNA there."

• Mariah's Father, Eric (2:45:30): "She was a phenomenal person. You killed her earthly body, but her spirit is so very much alive."

Final Thoughts

This episode masterfully weaves together personal stories, forensic evidence, and investigative journalism to present a compelling narrative that not only seeks justice for Mariah Wilson but also engages listeners in the broader conversation about trust, betrayal, and the fragile nature of human relationships.