Forensic Detectives

Explores three murder cases in which investigators secured convictions from trace evidence, including fingerprinting, fibre analysis and DNA testing. S4, Ep3

Features investigations in which natural clues, including insect bites, cat hair and a rare form of bacteria helped forensic scientists solve murders. S4, Ep4

Three cases illustrating the extreme measures investigators take to catch a killer when a missing person is presumed dead but no body can be found. S4, Ep6

Investigates murder cases that took a decade or more to solve and how detectives can solve such cases when clues have become scarce. S4, Ep8

Find out how arson investigators can retrieve important clues from scorched rubble, leading to the arsonist. S4, Ep13