
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 Florida, a 13-year-old girl is found stabbed over a hundred times; a teenager with a knife obsession comes under suspicion.
The murder of a couple is caught on camera; in the UK, a long-standing feud turns fatal.
In the United States, a man desperately calls the police for help after he is attacked.
Footprints unravel lies in one case; CCTV retraces the final moments of a victim.