Revenge

After an early release from prison due to cancer, Dean Price is beaten, stabbed 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.

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S04E03 - Ricochet