Picking up some two years after the events of season two, a young teenager is the victim of a brutal stabbing. During her investigations, Sarah once again crosses paths with Lizzie Adama, who is trying to balance her role as a detective with her family life.

It isn’t long before Sarah encounters further conflict in the form of DI Kieran Shaw, who is running Operation Perseus, “an undercover police task force set up to bring down south London drug kingpin Shakiel Oliver… The focus of Sarah and Kieran’s conflict is 15-year-old Ryan Kennedy, who witnessed the fatal stabbing but is also a key part of Shakiel’s inner circle” – culminating in a shocking climax for the operation.

Available to watch via ITVX

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