The search for a 20-year-old missing college student, Alyssiah Wiley, led investigators to a grisly discovery in Connecticut woods.

A jailhouse informant and surveillance footage led South Carolina investigators to a beloved convenience store clerk’s killer and his accomplice.

The search for a missing 15-year-old North Carolina girl, Danielle Locklear, led investigators to a suspect hiding in plain sight. 

In Overland Park, Kansas, department store security footage revealed the sinister reason Kelsey Smith had disappeared.

A Tennessee college town was rocked by a 22-year-old woman’s brutal rape and murder. Who killed Heather Maples?

Alexis Murphy, a 17-year-old high school student, mysteriously vanished on her way to the hair salon. What happened to her?

Why was a Florida salesman brutally murdered while visiting his girlfriend in Brooklyn? 

When these victims seemingly vanished or died unexpectedly, it was a shocking tragedy only made more disturbing by their last words or moments seen on camera.

In Oxygen's newest series, "Final Moments," law enforcement’s efforts to solve a case hinge on dissecting the victim’s final moments, using their last interactions with family and friends, surveillance footage, text messages, and social media posts to build a timeline.