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
Profiles three cases in which investigators used forensic science to track down and convict serial killers. For serial killers, once is never enough. S4/Ep11
A man risks everything to find his sister's killer - can a sympathetic detective with a great theory help him? Plus, a sexual predator is getting away with murder. S6/Ep10
A man is convicted of the murder of a little girl snatched during a game of hide-and-seek. After a 20-year campaign, could new DNA evidence set him free? S6/Ep13
Dismembered human remains are found in a grocery bag on a riverbank - will detectives be able to piece together the victim's identity and catch a killer? S6/Ep14
How a simple clue such as dirt on shoes can place a suspect at a crime scene. Meticulous forensic investigators follow the trails of evidence leading to killers. S5/Ep2
A makeshift coffin conceals a body - can insects help cops identify the corpse? Plus, a parasite expert proves murder when a woman is found in a dumpster. S6/Ep15
A woman, Betty, identifies a dead body as her missing sister Annie - but Annie is still alive. A look at murderers who kill to acquire a new identity. S6/Ep4
Discover how scientists can search beneath water for proof of homicide, with cases including a woman found floating in a pond tied to a car jack. S5/Ep12
How advances in technology can expose a murderous liar, such as the man who staged his wife's suicide to cash in a $100,000 life insurance policy. S5/Ep1
Poisoners: devious killers relying on their victim's trust in order to steal their lives. Find out why they don't usually stop at just one kill. S3/Ep9
Is the rapist and serial killer known as the Hillside Strangler working alone? Plus, a murderer is stalking California's parks; can detectives stop him killing again? S3/Ep6
Hiding a body can be tricky - it's sometimes easier to obscure the circumstances of death, turning murder into suicide or blaming it on someone else. S3/Ep4
No matter how clean a crime scene appears to be, the culprit often leaves something behind. Even a fingerprint or shoe tread can lead to a conviction. S3/Ep3
See how plants help provide oxygen and nutrients, but in a criminal investigation, they can also mark the time and location of a person's death. S2/Ep4
It is the insignificant details that forensic experts use to recreate a crime and catch a killer - fibres from a carpet, a lost eyelash or a clothing fragment. S2/Ep3
Crime writers know as much about crime as any crime-fighter - or criminal. They can provide as near a first-person account of a murder as is possible. S3/Ep14
The OJ Simpson murder trial captured the attention of the nation. Find out what forensics could and couldn't tell us about the trial of the century. S1/Ep15
Fingerprints are an indisputable, time-tested method of establishing someone's ID. New computerisation means identification can now take only minutes. S1/Ep12
Learn the ways that investigators are always on the cutting edge of new forensic techniques, helping them solve cases and catch criminals more swiftly. S2/Ep8
With only charred remains left of the victim, forensic detectives have to sift carefully through this scanty evidence to solve a perplexing murder. S1/Ep10
Just a few microscopic cells, from even a single hair or drop of blood, can place a murderer behind bars. What does DNA mean for crime solving today? S1/Ep6
Just a few microscopic cells, from even a single hair or drop of blood, can place a murderer behind bars. What does DNA mean for crime solving today? S1/Ep6