Lt. Columbo
Barney / Carl
Sergeant Kramer / Lab Attendant
Police Photographer (uncredited) / Security Guard (uncredited)
Vanessa Barsini / Trish Fairbanks
Maitre D' / Vito
Ed / Man in Bar
Bart Kepple / Jordan Rowe
Nelson Brenner / Eric Prince
Ralph Dobbs / Harry Barnes
Sergeant Burke / Harris
George
Crime Scene Cop
Murcheson / Joseph
Lady Scientist / Club Member (uncredited)
Patrolman / Dealer
Bar Patron (uncredited) / Policeman (uncredited)
Riley Greenleaf / The Great Santini
Officer Wilson / Photo Shop Man
Tanya / Salesgirl
Medical Examiner / Dubbing Chief
Conroy / Lassiter
Sewell / Investigator #3
Workman / Handwriting Expert