First broadcast 30th November/7th December 1973.
When one of the copy writers of Pym's Advertising Agency meets his death by falling down a spiral staircase, a new "writer" joins the staff to investigate the matter.
Ian Carmichael - Lord Peter Wimsey
Mark Eden - Chief Inspector Parker
Rachel Herbert - Lady Mary
Peter Pratt - Mr. Pym
Robin Bailey - Mr. Armstrong
John Hallam - Mr. Ingleby
Fiona Walker - Miss Meteyard
Christopher Timothy - Mr. Willis
Paul Darrow - Mr. Tallboy
Shirley Cain - Miss Rossiter
Caroline Dowdeswell - Miss Parton
Connie Merigold - Mrs. Crump
Spencer Banks - Ginger Joe
Robert Hamilton - Victor Dean
Gwen Taylor - Pamela Dean
Harry Fielder
Bridget Armstrong - Dian de Momerie
Peter Bowles - Major Todd Milligan
John Sterland - Mr. Copley
Antony Carrick - Cummings
Hilary Wontner - Mountjoy
