Joan Hickson as Miss Marple

Jean Simmons as Carrie-Louise Serrocold

Joss Ackland as Lewis Serrocold

Faith Brook as Ruth van Rydock

Holly Aird as Gina Hudd

Todd Boyce as Walter Hudd

Tom Kerridge as Keithie

Gillian Barge as Mildred Strete

Neal Swettenham as Edgar Lawson

David Horovitch as Chief Inspector Slack

Ian Brimble as Sergeant Lake

Christopher Villiers as Alex Restarick

Jay Villiers as Stephen Restarick

Saul Reichlin as Dr. Maseryk

Matthew Cottle as Ernie Gregg

John Bott as Christian Gulbrandsen

Brenda Cowling as Mrs. Rodgers

David Doyle as Neville

Jake Wood as Bert

Anne Atkins as W.P.C

Stee Billingsley as Dancer