During a visit to childhood friend Edith, retired housewife Hetty Wainthropp discovers that Edith's husband, Frank, has a son by a previous marriage. Hetty decides to turn amateur detective to trace him. When this gives her a taste for detection, Hetty decides to set up a private detective agency.
Patricia Routledge
Tony Melody
Jimmy Jewel
Jean Heywood
Gary Waldhorn
Gary Halliday
Ram John Holder
Jean Kent
Janet Allen
Andrew Paul
Jenna Russell
Julie Foy
Cathy Underwood
Matthew C. Vaughan
Nigel Collins
Fran O'Shea
Maureen Lunt
Rosemary Hirst
Emma Garner-Clarke
Deborah Fairfax
David Credell
Joyce Kennedy
Philip Wright
Judith Scott
Susie Hawthorne
Carolyn Dewhirst
Tom McGill
Mary Wray
Luke Branagan