Alan Alda
Myles Clarkson
Jacqueline Bisset
Paula Clarkson
Barbara Parkins
Roxanne Delancey
Bradford Dillman
Bill Delancey
William Windom
Dr. Roger West
Curd Jürgens
Duncan Mowbray
Kathleen Widdoes
Maggie West
Pamelyn Ferdin
Abby Clarkson
Curt Lowens
Gregory Morton
Conductor
Janee Michelle
Agency Chief's Girlfriend
Lilyan Chauvin
Woman Writer
Khigh Dhiegh
Zanc Theun
Alberto Morin
Bennett
Berry Kroeger
Raymont
Antoinette Bower
Member of Ely's Group (uncredited)
Walter Brooke
Party Guest (uncredited)
Marta Kristen
Party Guest (uncredited)
Frank Campanella
Detective (uncredited)
Cosmo Sardo
Party Guest (uncredited)
Harry Carter
Pallbearer (uncredited)
Terrence Scammell
Richard