This six-part BBC2 thriller written by John Roddick aired in February and March 1967 and possessed a virtue rare in thrillers – it was notable for the absence of cliched dialogue and heavy-handed writing, direction or acting.
The story related the finding of a dress belonging to Lisa Martin a year after her death, in the exact spot where her body was recovered from the Thames. This find and the murder of a young man – played by future Blue Peter presenter Peter Purves – set up a chain of events.
The three central characters were barrister Robert Sheridan (John Carson), his daughter Kathy (Angela Scoular), and Detective Sergeant Napier (Glyn Houston). Calvin Lockhart was the coffee club proprietor whose exaggerated air of non-involvement neatly reinforced the prevailing sense that everyone was hiding something.
Robert Sheridan
John Carson Det. Sgt. Napier
Glyn Houston Kathy Sheridan
Angela Scoular Grace Heager
Jean Harvey Det. Con. Ashwood
Brian Cant Francis Heager
John Barron Leo Pettit
Frederick Jaeger Alan Ramsey
John Cater Edward Mitchell
Brian Wilde Lee Anderson
Calvin Lockhart Jill
Anne Hardcastle Ann Napier
Judy Parfitt Horton
George Betton Kim
Ros Drinkwater Inspector
Frederick Hall Peter Jarrett
Peter Purves
