Forensic Factor

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.

Forensic science has developed a world of techniques for tracking and identifying weapons.

Fire, water, earth - killers call on all the elements in their attempt to cover up their crimes.

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.