In a recent breakthrough, a 65-year-old man was charged with the murder of Karen Taylor, a case that had remained unsolved for nearly 40 years.

The arrest was made possible by DNA evidence linking the suspect to the crime scene.

Prosecutors are seeking to hold the accused without bail as the case progresses.

In a Colorado court, 25-year-old Ahmad Al Aliwi Alissa was found guilty of first-degree murder for a 2021 mass shooting that killed 10 people in a Boulder grocery store.

Alissa, diagnosed with schizophrenia, had pleaded not guilty by reason of insanity.

The jury rejected this defense and convicted him on 10 counts of first-degree murder, leading to a mandatory life sentence without parole.

Witnesses described Alissa as methodical and brutal during the shooting.

While acknowledged as mentally ill, his diagnosis did not meet the legal standard for insanity.

Alissa's motive for the massacre remains unclear.

In this episode, Payton and Garrett delve into the chilling case of Sierah Joughin, who vanished after a bike ride. As her family and friends fear the worst, police investigate, retracing her steps that evening.