Season 3
DI Martha Bellamy, DS Jack Weston and DC Charlie Steele tackle investigations into a series of suspicious deaths, a badly burned body found in the Thames, a fatal arson attack with ties to the corporate world, and the connections between a pre-op transgender teenager and another teen gone missing.

A transgender boy is assaulted. The detectives must save his friend from a similar fate.
Connections

After an arson attack injures a young boy, Martha and Jack must face an old adversary.