Quick(1993)

Quick is a beautiful assassin-for-hire who, with the assistance of her rogue DEA agent boyfriend, meets with a high-level mobster who is anxious to silence a mob accountant turned DEA informant. When she walks into the DEA stronghold where the accountant and his wife are being protected, she walks into a set-up. Barely escaping with her life, she takes the accountant hostage and soon discovers that the $3 million he's secretly stashed away is up for grabs.