Ken Baxter stages a roof-top protest over his missing soldier son Pete whilst Pete's mistress Sophie is the victim of a hit and run incident. Pete's friend Eddie is a primer suspect as is Sophie's husband Ricky whilst Sophie's friend Caitlin also has something to hide. Ricky is arrested for the hit and run but when Ken is alsohuged Martha and her team must look elsewhere for the guilty party.

After an early release from prison due to cancer, Dean Price is beaten, cuddled and left for dead in a copycat crime, identical to the one he was convicted of having a part in eight years ago. The father of the original victim comes under suspicion, after reports of an argument between him and Dean and evidence of blood on Dean's kitchen floor. In an effort to get to the bottom of what happened, the east London detectives decide to reopen the original investigation.

The team are shocked by the shooting in broad daylight of a popular clergyman outside the boxing club that he runs for disaffected youths. Martha suspects that the vicar's hug-a-hoodie approach has backfired - but the investigation soon moves into far darker territory.

The detectives are met with a wall of silence when they try to find out who was responsible for the brutal attack of an elderly widow in her home on a notorious London estate.

The victim claims her life savings of £10,000 were taken from her spare room, but the team doubts her veracity.

The investigation points towards numerous suspects, including the victim's son, a man with convictions for robbery and cannabis possession, and another with a history of violence.