Visiting family in Shreveport, La., Tosha Lampkin disappears after making a late-night trip for food, then her burnt-out rental car is discovered along with her remains; CCTV cameras provide detectives with their only lead on her killers.

Sian O'Callaghan disappears after a night out in Swindon, U.K. With the clock ticking, detectives pull hours of surveillance footage from the area and hit gold: footage of her getting into a taxi.

Twenty-four-year-old Nathan Trapuzzano is shot dead during his morning walk, leaving his pregnant wife a widow. Security footage from the scene reveals the final shocking moments of Nathan's life but will it be enough to help police hunt down the killer?

Seventeen-year old Casey Crowder vanished early one Sunday morning after her car ran out of gas outside of Dumas, Ark. With no leads and no witnesses, investigators are desperate to find any CCTV cameras that can lead them to the missing teen.

When 27-year-old Christie Wilson disappears after a night at the local casino, surveillance cameras reveal her gambling with a mysterious man.

Devoted family man Dr. David Cornbleet is brutally killed in his office. His daughter finds him, bound and gagged, in a pool of blood. Police must rely on CCTV images of man with a concealed face to lead them to David's killer.

On April 4th, 2014, Kimberly Robertson's battered body is found on a sidewalk after a date with her boyfriend. A network of surveillance cameras plays out Kimberly's last few hours alive.

When a young woman is found dead in a Texas landfill, detectives race to discover the killer behind the brutal crime. With no leads, police turn to their only witnesses: video cameras that captured the murderer's chilling attempt to cover his tracks.

On March 18th, 2011, 32-year-old Patty Ayala is murdered at the Burger King where she works. Police find the safe open and a mysterious message next to Patty's body. They turn to surveillance video—and it's there the killer emerges from the shadows.

On Oct. 26th, 2009, widower Philip Gatusso is murdered in the quiet town of Fargo, N.D. As his in-laws drive across states to care for their now orphaned granddaughter, detectives to turn to a witness that never sleeps—surveillance video.

On November 21st, 2014, Jessica Padgett disappears. The only lead is her abandoned white Subaru. Surveillance cameras show her driving into a parking lot and walking down a back alley, never to return.

hen a teenager goes missing from her local Walmart, detectives struggle for leads. But then surveillance cameras reveal terrifying footage of a prowler kidnapping her, transforming the investigation into a desperate race to bring her home alive.

In Philadelphia, a 22-year-old nursing assistant vanishes. When police check the local CCTV cameras, they discover that Carlesha Freeland-Gaither was violently abducted right on camera. It then becomes a question of identifying the perpetrator.