Kansas City Confidential

Joe Rolfe was a deliveryman who worked for the flower company used in the heist. Police arrested him on suspicion of complicity because the robbers used a duplicate flower truck in the robbery, making him a logical suspect. Although his alibi checked out and he was eventually exonerated, the damage to his reputation and job was already done.

Mr. Big orchestrated a dual-vehicle operation: a real flower delivery truck and a duplicate truck used as a decoy. The robbers used masks so they could not identify each other, then approached the armored car with military precision. The duplicate truck ran parallel to the real one, allowing the gang to seize the money and escape in the look-alike vehicle while the real flower truck continued its normal route, creating confusion.

Mr. Big is Tim Foster, a former Kansas City police officer whose career was ruined by a scandal. He orchestrated the entire heist from behind the scenes while wearing a mask to hide his identity from the three fugitives he recruited. His plan was to let the robbers steal the money, then trap them and claim the reward for catching them, potentially restoring his reputation and job.

Tim Foster recruited three fugitives, Peter Harris, Boyd Kane, and Tony Romano, each with reasons to flee the country, making them disposable. His plan was to let them execute the robbery, then trap them and recover the money himself. This would allow him to claim the 25 percent reward for solving the crime and potentially reclaim his former position with the Kansas City police force.

After the heist, Mr. Big gave each robber a torn King playing card as a cryptic identifier. These cards were meant to serve as a last-resort link between the criminals if anything went wrong. Rolfe later used this card to expose the connection between Harris and the gang, using a poker game as a ruse to reveal the card and test the others' loyalties.

The torn cards are introduced early as a precaution, but their importance becomes clear when Rolfe uses them as evidence.

Rolfe tracked Harris to Tijuana and trapped him at the airport, where police shot and killed him. Rolfe then retrieved Harris's luggage, which contained the mask and torn card the real Harris had been given. Using these items, Rolfe was able to pass himself off as Harris and infiltrate the gang's meeting place in Borados.

During the climactic confrontation on Foster's boat, Romano killed Kane when they discovered the money Foster had conspicuously placed as a trap. Romano was trying to eliminate competition and take the entire payoff for himself, showing his character as a treacherous criminal who would turn on his own partners when the opportunity arose.

Helen Foster, Tim Foster's daughter and a law student, traveled to Borados after learning her father was involved in the conspiracy. She told Foster that the mayor had agreed to reopen the scandal that ruined his career, which would allow him to return to the police force. Her arrival complicated Foster's plan because her presence and moral objections made it harder for him to maintain his deception.

Foster wore a mask during the recruitment phase so the three fugitives could not identify him. This was crucial because he was a former police officer and wanted to distance himself from the crime completely. By keeping his identity hidden, he could orchestrate the heist while maintaining plausible deniability, and later frame his own crew without them ever connecting him to the robbery.

Rolfe deduced Foster's true identity during the confrontation on the boat. He noticed Foster had written individual notes to each person to meet on the boat, yet Foster claimed to be going fishing, an implausible cover. When Foster's behavior became increasingly suspicious and the money was conveniently placed as bait, Rolfe publicly exposed Foster as the mastermind, leading to the gunfight that killed Romano and fatally wounded Foster.

Foster's behavior throughout the film subtly hints at his control over events, from orchestrating the trap to writing the notes.

Foster's career as a Kansas City police officer was destroyed by a scandal that humiliated him. By orchestrating the heist and then claiming to solve it, he hoped to clear his name and regain his former position. His daughter Helen's news that the mayor would reconsider the scandal gave him hope that he could return to his old life, which made him hesitate as his scheme began to unravel.

On his deathbed, Tim Foster confessed to Andrews, the insurance investigator, that Rolfe was actually his informant who had helped bring the stolen money to light. Foster told Andrews that Rolfe deserved the reward for recovering the stolen funds. This final confession vindicated Rolfe completely, clearing his name and awarding him the substantial reward for his role in exposing the conspiracy.

Tim Foster was a former Kansas City police officer whose career ended in scandal. His insider knowledge of law enforcement allowed him to design a heist that would be difficult to solve and to position himself to claim the reward. His motivation was both financial, getting the stolen money, and personal: restoring his reputation and returning to the force that had dismissed him.