Documentary looking at the evidence that convicted murderer Ian Huntley.

A look at how the killer of Jessica Chapman and Holly Wells was convicted. People close to the notorious trial of Ian Huntley recall the 'errors' that led to his conviction.

This documentary recalls the capture and conviction of the man responsible for the deaths of five of his children and one of their half-brothers.

A revealing look at how key pieces of evidence have advanced investigations and helped bring killers to justice.

A revealing look at how key pieces of evidence have advanced investigations and helped bring killers to justice.