Early in this slam-bang techno thriller, London-based CIA operative Ryan Reynolds is killed before he can reveal the location of hacker Michael Pitt, who can access American weaponry anywhere. To catch the hacker, the agency approves an experimental medical procedure in which the dead spy’s memories will be implanted in the brain of hardened convict Kevin Costner. Costner, in full badass mode, makes this crackpot premise work, assisted by Tommy Lee Jones as the pioneering surgeon, who’s concerned only with the patient’s welfare, and crusty Gary Oldman as a CIA bureau chief, who’s bent on controlling his new pawn. The dialogue is less than scintillating, but the action sequences are sturdy. As brain-swap movies go, this isn’t half bad as long as you check your own brain at the door. Ariel Vromen directed.