Season 1 - Episode Guide

Episode: 1x01 | Airdate: Sep 17, 1969

Episode: 1x02 | Airdate: Sep 24, 1969

Episode: 1x03 | Airdate: Oct 1, 1969

Episode: 1x04 | Airdate: Oct 8, 1969

Episode: 1x05 | Airdate: Oct 15, 1969

Episode: 1x06 | Airdate: Oct 22, 1969

The son of a trusted officer of the Special Branch has become radicalised while away at university.

Episode: 1x07 | Airdate: Oct 29, 1969

A girl lands at Heathrow from Rhodesia, but owing to Britain's break of diplomatic relations, she has no valid passport.

Episode: 1x08 | Airdate: Nov 5, 1969

Detective Sergeants Webb and Gifford go undercover to investigate a secret movement.

Episode: 1x09 | Airdate: Nov 12, 1969

The Security Commission has met to consider the leak that tipped a spy during the Troika affair.

Episode: 1x10 | Airdate: Nov 19, 1969

A girl being held for giving official secret documents to the Russians faces a long gaol term.

Episode: 1x11 | Airdate: Nov 26, 1969

The wife of a member of the Czech embassy is caught shoplifting in London.

Episode: 1x12 | Airdate: Dec 3, 1969

A British embassy in eastern europe receives a coded message to say that Jordan of Special Branch would be visiting.

Episode: 1x13 | Airdate: Dec 10, 1969

A KGB officer is sent to London to co-ordinate security measures with the SB team.

Episode: 1x14 | Airdate: Dec 17, 1969