Entrapment (1999)

Following the theft of a highly-secured piece of artwork, an agent convinces her insurance agency employers to allow her to wriggle into the company of an aging but active master thief. Connery's burglar takes her on suspiciously and demands rigorous training before their first job together, stealing a highly-valued mask from a chichi party. Their deepening attraction and distrust could tear apart their partnership, but the promise of a bigger prize (some eight billion odd dollars) by Zeta-Jones keeps the game interesting. Only, who's playing with whom?