Kansas City Confidential

Joe Rolfe (John Payne) is a ex-con delivering flowers to the local businesses in Kansas City. When disgruntled ex-cop Timothy Foster (Preston S. Foster) cases a local payroll armored car for a holdup he takes into account the schedule of Rolfe and his deliveries as he plans his robbery. Foster contacts three crooks separately to help with the crime while keeping his own identity secret with a mask he blackmails them with past crimes and a guarantee of a $300 thousand-dollar payout for each. Pulling in Peter Harris (Jack Elam), Boyd Kane (Neville Brand), and Tony Romano (Lee Van Cleef), Foster as Mr. Big pulls off the robbery of the armored car right after one of Rolfe's deliveries by using a duplicate flower van. Rolfe is arrested and brutally interrogated by the police. Eventually cleared when the police find the duplicate robbery vehicle Rolfe is determined to clear his name and sets out to find the crew that set him up. He tracks Harris to a gambling joint in Tijuana Mexico and takes on his identity after Harris is killed and travels to a resort town of Barados Mexico to confront the rest of the crooks. Once there he meets Foster's daughter Helen (Coleen Gray) who has come to surprise her father. Rolfe and Helen develop an immediate attraction for each other and Foster attempts to keep them apart, as he knows Joe is an ex-con and is impersonating Harris. As the time for splitting up the money draws near Kane and Tony are aware Rolfe is not Harris and a dangerous confrontation with Mr. Big appears inevitable.