
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 man desperately calls the police for help after he is attacked.

A murder in a garage is recorded on camera in the US; a woman is found stabbed 54 times in the UK.

A sister tracks down her brother's killer; CCTV is the main witness to identifying the killer of a mother.

While investigators uncover a twist in one murder case, digital evidence raises questions in another.