Shamus

Burt Reynolds plays Shamus McCoy, a private detective who is hired to investigate a case involving stolen jewelry.

Dyan Cannon portrays Alexis Montaigne, a character who becomes important to the investigation.

John P. Ryan takes on the role of Col. Craig C. Hardcore, a figure connected to the central mystery.

Joe Santos plays Lieutenant Promuto, a police officer involved in the case.

Giorgio Tozzi portrays Dottore, a character who adds to the intrigue of the plot.

Ron Weyand plays E.J. Hume, a character linked to the investigation's developments.

Larry Block takes on the role of Springy, a supporting character in the film.

Beeson Carroll portrays John Bolton, adding depth to the story.

Kevin Conway plays The Kid, a character with an important role in the narrative.

Kay Frye takes on the role of Bookstore Girl, adding a unique element to the film.

John Glover portrays Johnnie Brosten, contributing to the unfolding mystery.

Merwin Goldsmith plays Schnook, a character that fits into the film's storyline.