Criminals Dickie Tufnell and Harry Kemp are shot dead in a gangland hit. Hackett learns that the latter had been forced into the robbery by a pair of revolutionaries looking to raise funds.

Hackett's ex-fiancée Gemma Maskell rings him out of the blue. He's unaware that her husband is threatening her life if she doesn't return to London. The following day, she is dragged from the river, strangled to death.