O'Brien explained last year why he opted not to reprise his fan-favorite character, Stiles, for the Paramount+ reunion movie. Tyler Posey, Crystal Reed, and more chat with ET about 'Teen Wolf ...

Teen Wolf is a flip-flop of the horrorific I Was a Teenage Werewolf story: this time, lycanthropy makes the afflicted high-schooler a big man on campus. An otherwise routine teen comedy ...