Phone Booth (2003)

Slick New York publicist Stuart Shepard answers a ringing phone in a booth and finds himself at the mercy of an unseen caller. The voice on the line warns that hanging up will get him killed, and the red glow of a rifle sight proves the threat is real. Trapped in plain sight with no way to leave or call for help, Stuart is forced into a tense negotiation with a sniper who controls his every move.