4x07 A Fixed Address (September 10, 1969)

Mrs. Mortimer's husband returns after 7 years.

4x06 The Comedian's Graveyard (September 03, 1969)

Frank looks for a missing girl.

4x05 Case for the Defence (August 27, 1969)

4x04 My Life's My Own (August 20, 1969)

4x03 Paid in Full (August 13, 1969)

Frank is accused of stealing a colleagues wages.

4x02 Divide and Conquer (August 06, 1969)

4x01 Welcome to Brighton? (July 30, 1969)

Released on Parole Frank finds it difficult back on the outside.