1. Murdered after School

When a 12-year-old boy is fatally stabbed in a park on his way home from school, police suspect a 14-year-old but need forensics to prove he is the killer.

3. Ambush in the Car Park

When a teenager is left fighting for his life after a stabbing in a car park, forensics must prove whether two brothers arrested nearby are the attackers or victims.

4. Catching the Cash Raiders

West Midlands and Cumbria Police join forces, determined to find forensics that will take down a brazen gang of ATM thieves who have been attacking cashpoints across the country.

5. Intruder in the Bedroom

Police and forensic teams urgently need to track down a stranger who has broken into a house in the middle of the night and sexually assaulted an 11-year-old child.