Cast of The First Deadly Sin

Frank Sinatra stars as Detective Edward X. Delaney, a dedicated detective on the trail of a serial killer in New York City.

Faye Dunaway portrays Barbara Delaney, the wife of Detective Delaney, who supports him during his intense investigation.

David Dukes plays Daniel Blank, a key figure in the investigation who aids Detective Delaney in uncovering the truth behind the murders.

George Coe takes on the role of Dr. Bernardi, a medical professional involved in the case who provides crucial insights to the detective.

Brenda Vaccaro is Monica Gilbert, a character intertwined in the mystery that Detective Delaney is working to solve.

Martin Gabel portrays Christopher Langley, a key suspect in the series of deadly sins that Detective Delaney is investigating.

James Whitmore plays Dr. Sanford Ferguson, a seasoned professional who assists Detective Delaney in the pursuit of justice.

Anthony Zerbe appears as Captain Broughton, a commanding officer who oversees the investigation led by Detective Delaney.

Joe Spinell embodies the role of Charles Lipsky, a character connected to the events surrounding the deadly sins investigated by Detective Delaney.

Jeffrey DeMunn is Corelli, a mysterious figure whose involvement in the case adds layers to the intricate plot of the film.

Eddie Jones portrays Curdy, a supporting character who aids Detective Delaney in his pursuit of justice and solving the deadly sins.

James Hayden takes on the role of Young Policeman, a rookie officer who crosses paths with Detective Delaney during the intense investigation.