After a frantic welfare call, police find 79-year-old Avanell Cowgill murdered in her home; with no clues except for a trail of strange credit card transactions, investigators hope surveillance video will give them what they need to reveal a killer.

In 2014, graduate student Tequila Suter is stabbed to death in her suburban Buffalo home. Without any obvious leads, investigators' only hope of solving the case is to piece together a trail of CCTV across town and follow in the footsteps of a killer.

In 2013, Kira Steger goes missing after a date night with her husband at the Mall of America. After a shocking discovery in a parking lot, investigators fear foul play. They turn to mall security footage in the hopes of solving this mysterious case.

In March 2014, the bodies of two women lie behind a grocery store in Galveston, Texas. With few clues to go on, the homicide investigation gets off to a slow start. A trail of surveillance footage could possibly reveal who killed the women and why.

A 2013 Hawaiian getaway turns into a nightmare when 28-year-old Ivanice Harris vanishes into thin air. Detectives trace her movements to a Waikiki hotel, covered in surveillance cameras. Now they piece the video clues together, trying to find the woman.

In Kentucky, 13-year-old David Oakley comes home to find his stepmother murdered and his 15-year-old sister Jenna missing; Police race to piece together a killer's video trail, only to uncover a brutal plot.

In Farmville, North Carolina, three family members working at a convenience store fall victim to the most cold-blooded crime the town has ever seen; detectives attempt to pick up the killers' video trail and put an end to their bloody spree.

In Fontana, California, a bizarre traffic accident takes the life of 18-year-old Christian Dominguez Aguilar. With the driver vanished into thin air, police turn to surveillance video for answers, but the deeper they go, the more sinister things get.

In May of 2013, 36-year-old Army veteran Maribel Ramos disappears from her Orange, California, apartment without a trace. Suspecting foul play, investigators devise a unique surveillance strategy to track her down and uncover some disturbing evidence.

Police are called to the scene of a traffic accident in West Chester, Pa. where 18 year-old Bianca Roberson is found dead at the wheel of her car; an autopsy reveals a sinister crime.