Season 5

01 The Rajah's Ruby Episode 127th June 1977 It's 1925, and a daring thief makes off with a precious gemstone. 02 Village Fate Episode 24th July 1977 Rehearsals for a murder mystery play turn sinister when one of the actors is poisoned for real. 03 No Happy Returns Episode 311th July 1977 Seventieth birthday celebrations for a bad-tempered Chairman of the Board end with a bang! 04 The Q43 Experiment Episode 418th July 1977 A top British scientist is gunned down as he works in his laboratory. 05 Last Tango in Tooting Episode 525th July 1977 It's the finals of the Banworth Chemical Works dance competition and there's murder on the dancefloor.