A paranoid, secretive surveillance expert has a crisis of conscience when he suspects that the couple he is spying on will be murdered.
Gene Hackman
as Harry Caul
John Cazale
as Stan
Allen Garfield
as William P. 'Bernie' Moran
Frederic Forrest
as Mark
Cindy Williams
as Ann
Michael Higgins
as Paul
Elizabeth MacRae
as Meredith
Teri Garr
as Amy Fredericks
Harrison Ford
as Martin Stett
Mark Wheeler
as Receptionist
Robert Shields
as The Mime
Phoebe Alexander
as Lurleen