In Columbo's first outing, a psychiatrist uses a patient he is having an affair with to help him kill his wife, but his perfect alibi may come apart at the hands of a seemingly befuddled LAPD lieutenant.
| Actor | Role |
|---|---|
 Peter FalkColumbo | Columbo |
 Gene BarryRay Flemming | Ray Flemming |
 Katherine JusticeJoan Hudson | Joan Hudson |
 William WindomBurt Gordon | Burt Gordon |
 Nina FochCarol Flemming | Carol Flemming |
 Virginia GreggMiss Petrie | Miss Petrie |
 Andrea KingCynthia Gordon | Cynthia Gordon |
 Susanne BentonBlonde | Blonde |
 Ena HartmanNurse | Nurse |
| SSherry BoucherAir Hostess | Air Hostess |
 Anthony JamesTommy | Tommy |
 Frank BakerMan in Park (uncredited) | Man in Park (uncredited) |
| JJim CreechPoliceman in Hospital (uncredited) | Policeman in Hospital (uncredited) |
| EEd HaskettParty Guest (uncredited) | Party Guest (uncredited) |
 Clark HowatDoctor (uncredited) | Doctor (uncredited) |
 Mark RussellPoliceman (uncredited) | Policeman (uncredited) |
| DDon StewartAirline Ticket Man (uncredited) | Airline Ticket Man (uncredited) |
| TTom WilliamsLaundry Delivery Man (uncredited) | Laundry Delivery Man (uncredited) |