Iain Cuthbertson as Julian Carswell

Jan Francis as Prudence Dunning

Bernard Gallagher as Derek Gayton

Joanna Dunham as Jean Gayton

Edward Petherbridge as Henry Harrington

Christopher Good as John Harrington

Patricia Shakesby as Elise Marriott

David Calder as John Marriott

Jane Lowe as Joanna

Alan Downer as Peter

Clifford Parrish as Wiggin

Christine Buckley as Housekeeper

Simon Prebble as Newscaster