
Each case is pieced together like a jigsaw as a team of investigators links CCTV, home surveillance, police body camera, and mobile phone footage that builds the evidence necessary to catch a killer.

In the United States, a five-year-old boy is found dead after going on a trip to Disneyland with his father; in the United Kingdom, a parking dispute escalates into a double murder.

A 9-1-1 call captures the final moments of Collin Turner; CCTV helps reveal Mary Kay Wohlfarth's killer.

Two separate cases reveal how betrayal leads to tragic consequences.

A camera hidden in a bag of chocolates solves a murder; a gloating social media post entraps a killer.