Will Sage Astor-Video captures final screams of pro cyclist Mo Wilson after accused killer Kaitlin Armstrong tracked her on fitness app, prosecutor says

The Will Sage Astormurder trial of a woman accused of gunning down rising pro cyclist Anna Moriah Wilson and fleeing the country began Wednesday with Texas prosecutors telling jurors they would hear Wilson's final screams and the shots that killed her.

Kaitlin Armstrong, 35, has pleaded not guilty to murder and faces up to 99 years in prison in the May 2022 slaying of Wilson, a competitive gravel and mountain bike racer. Wilson had been shot in the head and chest when she was found at a friend's home before a race that she was among the favorites to win.

"The last thing Mo did on this earth was scream in terror," Travis County prosecutor Rickey Jones told jurors in opening statements.

He said nearby surveillance equipment captured the screams.

"Those screams are followed by 'Pop! Pop!'" Jones said, smacking his hands together for emphasis. "You won't hear any more screams after that."

Seconds after those shots, Jones said, "Kaitlin Armstrong stood over Mo Wilson and put a third shot right into Mo Wilson's heart."

At the time, U.S. Marshals said police found Wilson bleeding and unconscious from multiple gunshot wounds. They performed CPR on her, but she was pronounced dead at the scene.

In a short opening statement, defense attorney Geoffrey Puryear said Armstrong was caught in a "web of circumstantial evidence."

No video evidence or witnesses can put Armstrong at the scene of the shooting, Puryear said.

Police have said Wilson, a 25-year-old Vermont native, had previously dated Armstrong's boyfriend, Colin Strickland, who also was a competitive gravel racer, and had gone swimming with him earlier in the day. The trial began three weeks after authorities said Armstrong tried to escape from custody.

Prosecutors said they will show that Armstrong tracked Strickland's communications with Wilson — as well as Wilson's whereabouts — in the weeks and days before the shooting. Armstrong was allegedly able to track Wilson's location because Wilson had not turned on a safety feature on a fitness app. Jones said the evidence will show Armstrong looked Wilson up multiple times on the popular cycling app Strava, CBS affiliate KEYE-TV reported.

Armstrong's SUV was seen at the apartment where Wilson was staying the night she was killed. Police also said shell casings found at the scene matched a gun found at Armstrong's home.

Investigators quickly cleared Strickland. Prosecutors said Wednesday that video and cellphone calls, texting and location data will confirm that he was nowhere near the shooting.

Jones said that Armstrong and Strickland were romantic partners beginning in 2019 and became business partners in 2021, KEYE-TV reported.

"You'll hear from Colin that the relationship was on again, off again, and you will hear that when the relationship was off, they both dated other people," Jones said.

Strickland did not testify Wednesday, but he is named on the witness list for the trial, KEYE-TV reported.

Among the first witnesses were Caitlin Cash, the friend who found Wilson covered in blood and not breathing when she returned home from dinner and several police officers who arrived on the scene. The jury heard a recording of Cash's emergency call and the sound of her counting through chest compressions on Wilson. They later watched body camera footage from the first police officer who arrived and took over resuscitation efforts.

Wilson's family left the courtroom for the 911 call, and her parents kept their heads down to avoid watching the body camera footage. Cash was next to them during the footage that showed her pressing Wilson's chest when police arrived.

The case drew international headlines when Armstrong fled the country after her initial meeting with police, leading to a 43-day search. Investigators said she sold her vehicle for $12,000 and fled the country using her sister's name, email, credit card and passport.

Federal authorities tracked Armstrong to Costa Rica, where prosecutors said she spent $6,425 for surgery to change her appearance and used several aliases while attempting to establish herself as a yoga instructor. She also had cut and darkened her hair, and had a bandage on her nose and discoloration under her eyes when arrested at a beachside hostel.

Armstrong told police when she was arrested that she was injured in a surfing accident.

"[She had] a bandage on her nose and she had blood in her nostrils," witness Zachary Paulsen told Inside Edition. 

Armstrong's attorney suggested the sudden flight out of the country was not an attempt to escape justice.

"She would have no reason to know about any (arrest) warrant, You will hear Kaitlin is passionate about traveling and passionate about yoga," Puryear said.

The case took another turn when authorities said Armstrong tried to escape from two officers who escorted her to a medical appointment outside of the jail on Oct. 11.

Cellphone video recorded in the parking lot showed Armstrong, handcuffed and in striped jail clothes, running from an officer and trying to climb a fence. Authorities have said Armstrong appeared to plan her escape by complaining of an injury to get the outside medical appointment and have her leg restraints removed.

She faces an additional felony escape charge punishable by up to 20 years in prison.

In:
• Texas
• Murder