Detective Chief Inspector Wexford receives an anonymous letter informing him that 'a girl named Ann has been killed by a small, dark young man named Geoff Smith'.
George Baker - Det. Chief Insp. Reg Wexford Christopher Ravenscroft - Det. Insp. Mike Burden Louie Ramsay - Dora Wexford Robert Reynolds - Det. Cons. Mark Drayton Nicholas Gecks - Rupert Margolis Carmel McSharry - Ruby Branch Russell Hunter - Monkey Matthews Christopher Ellison - Mr. Kirkpatrick Kim Thomson - Linda Grover Jean Heywood - Mrs. Penistan Mitzi Rogers - Mrs. Anstey Donald Hewlett - Russell Cawthorne Hal Dyer - Mrs. Cawthorne Arthur Cox - Mr. Grover Pamela Buckle - Mrs. Grover Stephanie Fayerman - Mrs. Kirkpatrick Ann Penfold - Jean Burden Noah Huntley - John Burden Emma Smith - Pat Burden Deborah Poplett - Sheila Wexford Ken Kitson - Sgt. Martin Michael Stainton - Sgt. Camb Harriet Thorpe - Anita Margolis Peter Slade - Ray Anstey Kate Eaton - Jan Winters Jim Dunk - Knobby Clark Rupert Bates - Cons. Bryant Daniel O'Brien - Cons. Gates Barbara Ashcroft - Lady Customer Eliza Buckingham - Mrs. Benson Yvonne D'Alpra - Mrs. Lorrimer Marc Sinden - Richard Fairfax Christopher Robbie - TV Commentator Luke Branagan - Loitering Man Martin Fisk - Demolition Man Raymond Francis - Mr. Scatcherd Neville Phillips - Shop Assistant Marc Sinden - Richard Fairfax Frank Tregear - Harold Jo Warne - Edna
