When a missing teenager is found murdered, a piece of rope provides the only clue to the killer's identity. And, police struggle to build a murder case without a body. S6/Ep18
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
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
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
When a makeshift cemetery is uncovered by a road, detectives realise a serial killer is at large. Will they be able to catch him before he murders more women? S6/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
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
Discover how a killer can try to cover his tracks, but evidence is hard to conceal when a special breed of investigative dog picks up the scent. S5/Ep13
Tiny evidence helps bring to justice a murderer who stabbed two young women to death. Plus, the search for the identity of a woman found decapitated. S5/Ep11
A young woman's body is found in the trunk of a car, forensic clues lead to the killer of a 19-year-old boy and a police officer does the unthinkable. S5/Ep10
A woman's severed torso is pulled from the Mississippi River; can police identify the victim and catch her killer? Plus, a state trooper makes a grim discovery. S5/Ep9
The naked body of a Swedish man is found, a father and son are accused of killing a woman and a police officer impostor disposes of her love rival. S5/Ep5
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
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
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
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
Features investigations in which natural clues, including insect bites, cat hair and a rare form of bacteria helped forensic scientists solve murders. S4/Ep4
Explores three murder cases in which investigators secured convictions from trace evidence, including fingerprinting, fibre analysis and DNA testing. S4/Ep3
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
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
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