Privé-detective Harper krijgt de opdracht de verdwenen miljonair Sampson op te sporen. Ettelijke klappen en lijken later brengt Harper de waarheid boven water. Tussen de bedrijven door kampt Harper met privé-problemen, hij moet kiezen tussen zijn vrouw en zijn beroep.
Nee, helaas is Harper nog niet beschikbaar op Netflix in Nederland.
| Writing | William Goldman | Screenplay |
| Directing | Jack Smight | Director |
| Writing | Ross Macdonald | Novel |
| Crew | Paul Baxley | Stunt Coordinator |
| Art | Alfred Sweeney | Art Direction |
| Directing | James H. Brown | Assistant Director |
| Production | Elliott Kastner | Producer |
| Art | Claude E. Carpenter | Set Decoration |
| Sound | Frank Regula | Boom Operator |
| Editing | Stefan Arnsten | Editor |
| Camera | Conrad L. Hall | Director of Photography |
| Production | Jerry Gershwin | Producer |
| Art | Wayne Fitzgerald | Title Designer |
| Sound | Johnny Mandel | Original Music Composer |
| Costume & Make-Up | Jean Burt Reilly | Hair Supervisor |
| Sound | Stanley Jones | Sound |
| Costume & Make-Up | Gordon Bau | Makeup Supervisor |
| Production | Chuck Hansen | Unit Manager |
| Crew | Paul Baxley | Stunt Double |
| Crew | Joe Pronto | Stunts |
| Crew | Paul Baxley | Stunts |
| Crew | Gene Coogan | Stunts |
| Crew | Sol Gorss | Stunts |
| Crew | Herb Pacheco | Stunts |
| Crew | Bill Shannon | Stunts |
| Crew | Jim Sheppard | Stunts |
| Crew | James Turley | Stunts |
| Crew | Bob Herron | Stunts |
| Crew | Harvey Parry | Stunts |
| Crew | Jerry Summers | Stunts |
| Crew | Ann Pat Kelly | Stunts |
| Sound | Johnny Mandel | Conductor |
| Camera | Richard Doran | First Assistant Camera |
| Camera | Jordan Cronenweth | Assistant Camera |
| Crew | Dick Crockett | Stunts |
| Crew | Sam A. Mides | Stunts |
| Crew | Tom Steele | Stunts |
| Crew | Bert Steinberg | Dialogue Coach |
| Crew | Ron Veto | Stunts |
| Camera | Kenneth B. Taylor | Grip |
| Crew | Morton C. Thompson | Stunts |
| Sound | Willis Holman | Orchestrator |
| Camera | Richard Moore | Camera Operator |
| Camera | Jordan Cronenweth | Camera Operator |
| Sound | Dan Wallin | Scoring Mixer |
