Bite marks in a block of cheese hold the key to catching a killer when he helps himself to a snack after a home invasion.
Police have only a skeleton to help them piece together what happened to a body found 10 years after a murder.
When his parents are found dead, a man does everything he can to avoid being caught - but Luminol reveals a vital clue.
A man insists his missing parents are on holiday, but a forensic investigation of their house shows signs of a vicious attack.
When the body of a 16-year-old girl is found in a field, it would take over two decades before a DNA profile of the killer can be developed.
Thirty years after three gruesome murders, familial DNA and the exhumation of a body finally closes the case.
Experts analyse sand found in a car when a man goes missing, which leads them to a body and a twisted murder case.
Experts analyse the bodies of two women found in a freezer. Their untimely deaths would be linked to one vicious predator.
