Alan Alda

as Myles Clarkson

Jacqueline Bisset

as Paula Clarkson

Barbara Parkins

as Roxanne Delancey

Bradford Dillman

as Bill Delancey

William Windom

as Dr. Roger West

Curd Jürgens

as Duncan Mowbray

Kathleen Widdoes

as Maggie West

Pamelyn Ferdin

as Abby Clarkson