
A team of investigators links CCTV, home surveillance, police body camera, and mobile phone footage that builds the evidence necessary to catch a killer.
A murder in a garage is recorded on camera in the US; a woman is found stabbed 54 times in the UK.
In the US, recordings provide vital evidence to solve the death of a man's wife; in the UK, a feud leads to a house fire that kills four young children and their mother.
A couple are found dismembered in their own home; a woman is found dead after being stalked by a stranger.
A killer records himself tampering with the weapon; phone data exposes betrayal.