Exploring both the capabilities and limitations of forensic science, this program guides viewers through real-world murder cases and studies ways a killer might thwart even the most advanced detection methods. Featuring commentary from criminology experts, the program explains techniques used to determine time and cause of death, such as the examination of insects in a corpse—or a pig carcass, if investigators need a “body double” to re-create the crime. The film also demonstrates the difference between a suicidal hanging and a murderous one, tests the viability of an icicle as a murder weapon, and discusses the radiation poisoning of ex-KGB spy Alexander Litvinenko—a possible perfect crime. Original BBC broadcast title: How to Commit the Perfect Murder. (50 minutes)