When a carer finds a vulnerable man dead in his bedroom surrounded by blood splatter, authorities declare a crime scene and begin an investigation but run into difficulties as they are confronted by clear signs of a thorough clean-up.
Police find the bodies of two young women in a freezer, possibly lured to their death by the same murderer. Will forensic analysis of the evidence help identify the killer?
Beginning with a body found in a ditch by a dog-walker in 2013, a serial killer investigation takes on a new dimension of importance after two more attempted murders are reported.
When a motorist finds a foul-smelling suitcase they call the police. But the corpse within proves difficult to identify until the authorities make a breakthrough.
After a 17-year-old is found dead in the kitchen of her own home, the forensic team's first lead is that there has been a sloppy attempt at clean-up where the murderer has poorly tried to stage the death as suicide.
Teams of detectives and forensic scientists examine the evidence left behind in the case of two women whose dismembered body parts were found inside bins. That led to the arrest of Anthony Hardy who became known as The Camden Ripper.
After a student from Poland disappeared in Glasgow, authorities soon found the culprit to be a convicted sex offender living under an alias with a long list of victims.
In 2002, an 87-year-old pensioner was killed after a man broke into her home and sexually assaulted her, but police were stumped when none of the DNA evidence came back as a match.
After a student is found dead in his parked car in Oxford, detectives struggle to unravel a sordid, and lethal, family plot surrounding the victim and his girlfriend.