Craven find himself under suspicion of accepting a bribe.

This marked the return of the series in an all new shot on film format with a mostly new cast and lots more action.

Haggerty's appointment to Special Branch immediately brings him into conflict with Craven - he believes that Craven is on the trail of a man who is already dead.

Craven finds the tables turned when he is accused of hounding a self-confessed fraud.

Haggerty and Craven target a team of vicious muggers.

Special Branch joins forces with a bomb-disposal expert to stop a terrorist bombing campaign in the heart of London.

The body of a young girl is found floating in the Thames - is it murder, suicide or something worse?

A deranged man has taken a hostage and threatens to blow up a block of flats. Craven must act quickly to avert disaster.

British-born Hollywood star Sue Arden arrives in London to rehearse a play, accompanied by a tip-off from the F.B.I that she could be a target of a murder attempt. Craven, Haggerty and North are assigned to protect the actress, but the job and the murder threats are not all they appear to be…

Craven finds himself investigating a man accused of being a traitor, but has his doubts as to the truthfulness of the accusations.

Craven is puzzled as to why he has been asked to carry out twenty-four hour surveillance on a couple who are engaged to be married.

Craven and Haggerty are under the gun to find a kidnapped diplomat's daughter before she is killed.

The team is assigned to protect a visiting foreign diplomat.