Detectives Leo and Bella investigate a heist that doesn't seem to make much sense. As more contradictory clues come in, the sparky banter between them belies a greater attraction.

Juggling lies, disposing of evidence and bribing an informant, Leo battles with his dangerous double life - and Carter and Dylan fear his feelings for Bella could destroy them all.

When Hubble's body is pulled from the canal, Leo knows that he, Carter and Dylan must frame someone else for the murder, and set up a drug dealer. Meanwhile, Pascal seeks revenge.

Leo and Carter explode into action when they discover that Dylan and Sophia have run off. As the chemistry between Leo and Bella intensifies, he is forced to make a huge decision.

A shock murder leaves Leo reeling, Dylan acting out, and Lucas questioning his loyalties. Bella's intuition leads her closer to uncovering that one of the gang is a police officer.

When Bella's investigation leads her to Hackney Marshes - confirming her suspicions - she asks Leo for help. Can he find a way out while ensuring Bella doesn't come to harm?