Tom Selleck as Peter Mitchell

Steve Guttenberg as Michael Kellam

Ted Danson as Jack Holden

Margaret Colin as Rebecca

Celeste Holm as Jack's Mother

Nancy Travis as Sylvia Bennington

Philip Bosco as Det. Sgt. Melkowitz

Paul Guilfoyle as Vince

Cynthia Harris as Mrs. Hathaway

Alexandra Amini as Patty

Francine Beers as Woman at Gift Shop

Michelle Blair as Mary

Lisa Blair as Mary

Barbara Budd as Dramatic Actress

Michael Burgess as Handsome Man at Party

Claire Cellucci as Angelyne

Eugene Clark as Man at Party #1

Derek de Lint as Jan Clopatz

Michèle Duquet as Tawnya

David Ferry as Telephone Installer

Dave Foley as Grocery Store Clerk

Earl Hindman as Satch

Mario Joyner as Cab Driver

Gary Klar as Detective

Christine Kossak as One of Jack's Girls

Joe Lynn as Detective #2

Edward D. Murphy as Security Guard

Jacqueline Murphy as Gate Attendant

Colin Quinn as Gift Shop Clerk

Thomas Quinn as Mounted Policeman

Jackie Richardson as Edna

John Gould Rubin as Paul Milner

Camilla Scott as Cherise

Daniele Scott as Swimming Instructor

Sharolyn Sparrow as Vanessa

Stevie Vallance as Sally

Jonathan Whittaker as Adam

Peter Bontje as Party Guest (uncredited)

Billy Kay as Baby (uncredited)

Ruth Leon Weiman as Neighbor Crossing Street (uncredited)