In the first episode 'A Walk in The Dark', the team look at the story of Rachel. She was stabbed to death on New Years day 2004 - but it was initially believed that she had gone missing.
Then her body was found in Michael Little's house, he was sentenced to life in prison.
When mother of two Sharon went missing - her husband told police that she had run off with her new boyfriend, in second episode 'For the Love of Money'.
But when her car was found and her husband Gary ran away with their children - a hunt for her body was sparked.
In third episode 'The Tomb in the Terrace' - When the remains of a body was found in a holdall in Sheffield, clay was used to create a reconstruction of the deceased's face.
The reconstruction allowed the police to identify the body and find out who had killed him.
Reconstruction for episode 'The Good Samaritan': 21 year old Jane was abducted from a supermarket car park when she stopped to help a stranger.
Would she be able to remember enough details to help police catch the man who sexually assaulted her? Find out in Nightmare in Suburbia, Monday nights at 9pm on the Crime and Investigation Network.
Reconstruction for fifth episode 'The Internet Stalker': When Matthew Pyke and his girlfriend Joanna decided to run an internet forum - who could know what danger it would put them in?
But when a man from the forum who was obsessed with Joanna appeared - Matthew's life was put at risk.