Strangers - Season 2 (1979)

Bulman, Willis and Doran are working undercover at the docks trying to identify the ringleaders in a series of bicycle thefts. Back at the office Detective Inspector Rainbow is not happy with their methods. After an accident on the quay Bulman starts to get romantic ideas about the lady doctor.

When Bulman successfully infiltrates a gang of villains, it isn't long before he finds himself on the run from the police - and desperately in need of the assistance of his undercover colleagues.

When counterfeit Deutschmarks flood Germany and the CID officers try to establish a connection in England, they find themselves facing violent and ruthless opposition from a gang with murder on their minds.