Movie series about an immortal Scottish swordsman, and the other immortals he fights, from the middle ages into the modern day. An immortal may only be killed by decapitation, and when only one is left he will gain great power. "There can only be one" is a famous quote. The original movie spawned a sequel which was greatly criticised, and the third in the series, and television spinoffs, ignore it. The fourth film Endgame joins together characters from the films with those from the TV series.