Experts reveal the gory secrets about cause of death that nature can leave behind on corpses, clues which range from insect infestations to weather conditions.
Experts in criminal profiling trace the technique's history and reveal how it was used in an attempt to identify notorious killers such as Jack the Ripper.
How even the tips of the ears and the soles of the feet may give a criminal away by leaving vital clues at the scene of the crime.
How advanced technology is used to investigate explosive residue, ballistics and trauma wounds, to reveal the weapons and the criminals who used them.
How attempts to conceal crime by destroying the evidence may reveal the criminal.
Forensic experts describe their use of hi-tech tools to solve crimes, from lie-detectors to computers which can allegedly isolate a guilty face in a crowd.