Series 1

01 Cause for Concern Episode 14th January 1974 02 Lesson Number One Episode 211th January 1974 03 The Walls Came Tumbling Down Episode 318th January 1974 04 In Her Own Right Episode 425th January 1974 05 Prisoner by Marriage Episode 51st February 1974 06 The Group Episode 68th February 1974 07 One Step Forward, Two Steps Back Episode 715th February 1974 08 Failing to Report Episode 822nd February 1974 09 Tea on St. Pancras Station Episode 91st March 1974 10 Guessing Game Episode 108th March 1974 11 When the Bough Breaks Episode 1115th March 1974 12 Labour of Love Episode 1222nd March 1974 13 A Sense of Duty Episode 1329th March 1974