Crime House 24/7 — Night Watch: The Love Triangle that Ended in Murder: Kaitlin Armstrong (Feb 10, 2026)
Podcast Host: Katie Ring

Episode Overview

In this Night Watch episode, host Katie Ring launches a three-part deep dive into the chilling murder of rising cycling star Anna “Mo” Wilson, unraveling a love triangle that spiraled fatally out of control. The episode explores Kaitlin Armstrong’s obsession and jealousy over her boyfriend, professional cyclist Colin Strickland, and his connection to Mo Wilson. Blending biography, insight into interpersonal dynamics, and a step-by-step recounting of events leading up to the murder, the episode offers listeners a close forensic look at the minds, relationships, and evidence at play.

Key Discussion Points and Insights

Introducing the Victim and Suspect (02:34–06:18)

• Anna “Mo” Wilson: Born in 1996, a prodigy in gravel cycling, known for her modesty and drive. Originates from an accomplished, athletic family and transitions from skiing to cycling after knee injuries.
• Kaitlin Armstrong: Born 1987, raised by a single mother with addiction problems. Moves to Austin, Texas, dives into yoga and real estate, but displays emotional volatility early on.
  • Memorable account from a Bali yoga retreat: “She burst into tears as she confessed to everyone that she was there because she was running from something back home.” (03:35)
• Armstrong meets Colin Strickland in 2019, ignites a complex romantic dynamic.

Kaitlin & Colin: Rocky Relationship and Jealousy (06:18–11:00)

• Early incompatibilities noted: “He grew up on a farm, preferred to eat organic food… Kaitlin didn’t know how to cook and shopped at fast fashion chains.” (07:12)
• Kaitlin aids Colin's mother, feels her nurturing side, but also emotional dependency surfaces.
• Kaitlin immerses herself in cycling to share Colin’s world, but ultimately feels left out of both the sport’s social life and Colin’s affections.
• She becomes suspicious, discovers intimate photos of Mo on Colin’s phone. Sends them to Colin wordlessly. “She just wanted him to know that he couldn't hide anything from her.” (09:40)
• The couple breaks up but reconciles after an ice storm disrupts Kaitlin’s life.

Love Triangle Unfolds: The Introduction of Mo Wilson (11:00–13:40)

• Colin meets Mo at a race; Kaitlin notices growing rapport between them at an Arkansas cycling event.
• Kaitlin isn’t invited to certain activities; suspicions heighten, leading to confrontations and emotional confrontations during their road trip home.
• “Kaitlin noticed that Colin was being extremely friendly with a young woman...soon Kaitlin learned that the woman was...Mo Wilson.” (10:55)
• Afterward, Colin ends the relationship, but Kaitlin stalls moving out and continuously monitors Colin.

Escalation to Obsession & Violence (13:40–16:25)

• Kaitlin sees social media evidence of Colin and Mo’s closeness.
• “Kaitlin started calling [Mo] constantly, warning her to stay away from Colin. Eventually, Mo blocked Kaitlin’s number…” (12:39)
• Colin admits to Kaitlin that he and Mo were intimate. Hurt and validation of her fears drive Kaitlin deeper into obsession.
• To help with purported safety fears, Colin helps Kaitlin purchase a 9mm Sig Sauer handgun (14:23): “Instead, it added a dangerous new layer to an already fragile relationship.”
• Kaitlin becomes fixated on Colin and Mo, checks Strava and social media to track them, repeatedly tells friends: “she was so jealous she would kill Mo.” (15:25)
• On May 11, 2022, she confirms Colin is lying about his whereabouts with Mo by checking messages and fitness tracking apps: “Kaitlin called Colin to see if she could catch him in his lie. But her call went straight to voicemail. So did her next call, and the one after that. Kaelyn couldn’t take it anymore...she decided to take matters into her own hands.” (16:09)

The Crime: The Night of the Murder (17:46–21:10)

May 11, 2022: Timeline and Discovery

• Colin returns home at 9pm; Kaitlin arrives 20 minutes later, acts “extremely forceful” sexually with Colin (17:56).
  • Colin later reflects: “He didn’t think much of it at the time. It wouldn’t be until later that he looked back and realized how sinister Caitlyn’s behavior really was.” (18:10)
• Meanwhile, Mo’s friend Caitlin Cash returns home before 10pm, finds Mo deceased in the bathroom.
• Mo had been out swimming with Colin, returned at 8:36pm. Murder occurred between then and 10pm (19:12).
• Evidence found:
  • Mo shot twice in the head, once in the chest; struggle marks noted.
  • Three bullet casings—9mm, matching Kaitlin’s recently purchased handgun.
  • Mo’s $10,000 bike found discarded outside, highly suspicious for a professional cyclist.
  • Surveillance footage: Gunshots heard, black Jeep Cherokee with a bike rack (matching Armstrong’s car) seen leaving scene (20:18).
• Police immediately question Colin, find the Jeep at his place.
  • Colin is “genuinely stunned” hearing of Mo’s death; Kaitlin's reaction is impassive (20:42).
• Odd behavior: Kaitlin casually asks a visiting friend if Austin is becoming more violent, and, notably:
  • “Is Cherrywood a bad neighborhood?” (21:28)
  • The friend later wonders, “How did Kaitlin know where Mo was when she died?” (21:32)

Notable Quotes & Memorable Moments

• “Little did they know that four years later she would become a cold blooded killer.” —Katie Ring (04:55)
• “She became fixated on their relationship, and soon her obsession became fatal.” —Katie Ring (02:40)
• “Instead of accepting that the relationship was over, Kaitlin kept keeping tabs on Colin’s life. And soon she got more than she bargained for.” —Katie Ring (12:00)
• “On at least two separate occasions, Caitlin told friends that she was so jealous she would kill Mo.” —Katie Ring (15:28)
• “Colin thought that having a gun would help her feel safer. Instead, it added a dangerous new layer to an already fragile relationship.” —Katie Ring (14:28)
• “Mo was lying on her back, unconscious in a pool of blood. Cash shook Mo trying to wake her…once they were there, Cash was quickly let outside, and pretty soon medics and officers from the Austin Police Department realized there was no chance of saving Mo.” —Katie Ring (18:45)
• “After he left the house and the shock of Mo’s death began to fade, [Colin's friend] wondered, how did Kaitlin know where Mo was when she died?” —Katie Ring (21:35)

Key Timestamps

• 02:34–06:18 — Background on Anna “Mo” Wilson and Kaitlin Armstrong
• 06:18–11:00 — Kaitlin & Colin’s relationship, warning signs of jealousy
• 11:00–13:40 — Intensifying love triangle; confrontation with Mo
• 13:40–16:25 — Armstrong buys handgun, stalks Mo, “I would kill Mo” threat
• 17:46–21:10 — Sequence of Mo’s murder, evidence, and immediate police response
• 21:28–21:35 — Armstrong’s suspicious comments to a family friend

Tone & Style

Katie Ring’s narration remains calm, methodical, and focused on factual storytelling, conveying both the emotional weight of the case and an investigative curiosity. She does not editorialize but guides listeners through mounting tension, echoing the psychological undertones present throughout the love triangle.

Final Thoughts

This opening installment lays a rich foundation for deeper exploration in the following episodes: listeners are left wondering about Armstrong’s mindset, the details missed by those around her, and the next steps for investigators. The episode masterfully combines empathy for the victim, psychological analysis of the suspect, and methodical dissection of chilling evidence—an essential listen for true crime enthusiasts following headline cases.