The Falcon in Mexico wastes no time getting started: within the first ten minutes, amateur sleuth Tom Lawrence (Tom Conway), aka The Falcon, gets mixed up with a damsel in distress, the murder of an art gallery owner, and a collection of valuable paintings attributed to a supposedly dead artist. Flying to Mexico, Lawrence gets in touch with Barbara (Martha MacVicar, later Vickers), the daughter of the allegedly deceased Humphrey Wade (Bryant Washburn). Before long, Lawrence has three more murders on his hands, not to mention an unknown assassin who's gunning for him. The film's most memorable performance is delivered by Nestor Paiva as a resourceful Mexican cabbie who's got a little more on the ball than is immediately apparent.