2. Episode 2

Explores how the police and their specialist forensic teams caught evil murderer Stephen Marshall, infamously known as “The Jigsaw Killer.”

3. Episode 3

The story of Scott Wilkinson, who was found murdered in the River Thames while he was on his annual trip on Donkey Island in Surrey.

4. Episode 4

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 a match.

5. Episode 5

After a student is found dead in his car, detectives struggle to unravel a sordid, and lethal, family plot surrounding the victim and his girlfriend.

6. Episode 6

After a student from Poland disappears, authorities soon find the culprit to be a convicted sex offender living under an alias with a long list of victims.

7. Episode 7

A group of Pakistani men in Glasgow, Scotland, set out for revenge against a Scottish gang by brutally murdering a random white teenager.

8. Episode 8

After a woman is reported missing police quickly find evidence pointing to her ex-boyfriend, who was out if jail for a brief time around when she vanished.