"Detective Inspector Campbell (Gordon Jackson) looks into the murder of a teacher at a girls school where there are a number of suspects, including her colleagues and the married man she had been seeing."
Barbara Murray
as Miss Shepherd
Gordon Jackson
as Detective Inspector Campbell
Pamela Alan
as Helen Cooper
Jane Aird
as Miss Halstead
Beatrice Varley
as Miss Hopkinson
Anne Butchart
as Miss Oliphant
Imogene Moynihan
as Miss Essex
Jenine Matto
as Miss Stanislaus
Sam Kydd
as Sergeant Harvey (Uncredited)
Robert Long
as Mr. Lawley (uncredited)
Nina Parry
as Mary (uncredited)
Stanley Rose
as Inspector Burgess (uncredited)
Enid Stewart
as Mrs. White (uncredited)
Julie Stewart
Sandra Whipp
as Brenda (uncredited)
Pauline Winter
as Mrs. Lawley (uncredited)
Doris Yorke
as Mrs. Vaughan (uncredited)
Peter Seabourne
Editor
Maisie Sharman
Writer
Stephen Clarkson
George Haslam
Art Direction
Director
Victor Hanbury
Producer
Eric Cross
Director of Photography
Ron Robson
Focus Puller
Laurie Turner
Still Photographer
Arthur Vincent
Boom Operator
John Dunsford
First Assistant Editor
Gerry Barnes
Sound
Sidney Rider
Stan Shields
Assistant Art Director
Novel
Dave Drinkwater
Ernest Morris
Assistant Director
Ted Holliday
Production Manager
Tony Young
Camera Operator
Dick Smith
Sound Supervisor
Marjorie Owens
Continuity
R.G.W. Smith
Sound Recordist