In Philadelphia, Carlesha Freeland-Gaither is abducted after getting off a bus upon returning home from a friend's party around 10 pm. The police respond to a 911 call from a concerned citizen who heard her screams and pursue the investigation using local CCTV footage. When police check the footage, they discover that she was violently abducted right on camera and now they have to find the mystery perpetrator before it's too late.

When 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 this investigation into a desperate race to bring her home alive.

On November 26, 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.

On October 26, 2009, widower Philip Gatusso is murdered in the quiet town of Fargo, ND. 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 March 18, 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.

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 April 4, 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. Hopefully, CCTV footage can help catch her killer.

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 in this twisted tale.

When 27-year-old Christie Wilson disappears after a night at the local casino, surveillance cameras reveal her gambling with a mysterious man. Police hope this video footage will unlock the secrets of what happened next and help bring her home alive.

24-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 that be enough to help police hunt down the killer.

Sian O'Callaghan disappears after a night out in Swindon, UK. With the clock ticking, detectives pull hours of surveillance footage from the area -- until they hit gold: footage of her getting into a taxi. Now, the race is on to ID the vehicle and driver.

Tosha Lampkin is in Shreveport, LA, visiting family. After a late-night trip for food, Tosha disappears. Her burnt out rental car is discovered -- along with Tosha's remains. CCTV cameras provide detectives with their only lead on her killers.