When a car bomb explodes on the American side of the U.S./Mexico border, Mexican drug enforcement agent Miguel Vargas begins his investigation, along with American police captain Hank Quinlan. When Vargas begins to suspect that Quinlan and his shady partner, Menzies, are planting evidence to frame an innocent man, his investigations into their possible corruption quickly put himself and his new bride, Susie, in jeopardy.
| Directing | Orson Welles | Director |
| Writing | Whit Masterson | Novel |
| Writing | Orson Welles | Screenplay |
| Production | Albert Zugsmith | Producer |
| Sound | Henry Mancini | Original Music Composer |
| Camera | Russell Metty | Director of Photography |
| Editing | Aaron Stell | Editor |
| Editing | Virgil W. Vogel | Editor |
| Art | Robert Clatworthy | Art Direction |
| Art | Alexander Golitzen | Art Direction |
| Costume & Make-Up | Bill Thomas | Costume Design |
| Crew | David Sharpe | Stunts |
| Sound | Leslie I. Carey | Sound |
| Art | John P. Austin | Set Decoration |
| Camera | Sherman Clark | Still Photographer |
| Art | Russell A. Gausman | Set Decoration |
| Lighting | Vic Jones | Gaffer |
| Costume & Make-Up | Merle Reeves | Hairstylist |
| Sound | Joseph Gershenson | Music Supervisor |
| Crew | Franklin Coen | Additional Writing |
| Crew | Paul Monash | Additional Writing |
| Editing | Edward Curtiss | Additional Editing |
| Costume & Make-Up | Bud Westmore | Makeup Artist |
| Costume & Make-Up | Vincent Romaine | Makeup Artist |
| Costume & Make-Up | Maurice Seiderman | Makeup Artist |
| Costume & Make-Up | Monty Westmore | Makeup Artist |
| Directing | Phil Bowles | Assistant Director |
| Directing | Harry Keller | Assistant Director |
| Directing | Terence Nelson | Assistant Director |
| Editing | Ernest J. Nims | Assistant Editor |
| Directing | Betty A. Griffin | Script Supervisor |
| Crew | Robert Tafur | Technical Supervisor |
| Camera | James V. King | Camera Operator |
| Sound | Barney Kessel | Additional Soundtrack |
| Costume & Make-Up | Claire Cramer | Wardrobe Designer |
| Costume & Make-Up | Nevada Penn | Wardrobe Master |
| Camera | Roy Vaughn | Assistant Camera |
| Art | Wayne Fitzgerald | Title Designer |
