1
When a boat carrying illegal passengers is found crashed in the Thames, the team investigate.
2
The team follows the trail of the people traffickers, and has to find any remaining survivors before a highly contagious disease breaks.
3
The team investigates a hit-and-run accident, an arson and a woman who collapsed on her hen night.
4
The team investigate a man who died on a night bus, an office prank gone tragically wrong and the suicide of a pro footballer.
5
Harry and Nikki's friendship is rocked by the discovery of the body of Harry's ex-lover.
6
Memories of his own daughter's death are stirred up when Leo is called in to investigate the suicide of a 14-year-old girl.
7
Memories of his own daughter's death are stirred up when Leo is called in to investigate the apparent suicide of a teenage girl.
8
When a third killing takes place on school grounds, Leo races to find some connection between the apparently motiveless murders.
9
Harry and Nikki are drawn into a war between a medical research establishment and a group determined to take direct action.
10
With Nikki missing, Harry works against the clock to find out who is responsible for the murders and finds himself in a cover-up.