Reindeer Games

Reindeer Games also known as Deception is a 2000 action film directed by John Frankenheimer in his final theatrical film, and stars Ben Affleck, Gary Sinise and Charlize Theron. The film received poor reviews.

Using the information from the real Nicks prison cell stories, Rudy is able to devise a robbery plan and informs Gabriel that the biggest loot is hidden inside a safe in the managers office the PowWow safe. On the night of the robbery, Rudy breaks out of his holding in order to find a way to arm himself as he knows Gabriel will kill him after the robbery. He stumbles upon Gabriel and Ashley and learns that they are lovers and partners in crime.The group robs the casino, each dressed as Santa Claus. Rudy, forced to take part in the robbery, hides the fact that he knows Ashleys secret. Shots are fired and security guards and Santas are shot. Ashley drives into the Casino and lets NickRudy know she is in on the heist. All meeting in the managers office, Gabriel introduces Rudy to the casino manager as Nick but the manager recognizes that he isnt Nick and Rudy confesses. Gabriel, furious at Rudys deception, spares him for a moment when he demands to know where the PowWow safe is. When the manager opens the safe, he grabs guns from inside and kills one of the robbers as the rest flee. Rudy kills another one of the robbers and is then grabbed by Gabriel and Ashley who tie him up in their 18wheeler truck. ........

Source: Wikipedia