This box set features all 13 episodes from the fourth season of the hit spin-off from 'The Vampire Diaries'. In this season, five years on from the Mikaelson's worst defeat, Marcel has become the sole vampire king of the city and holds Klaus captive, while his siblings remain in a state of slumber. When they are revived, the Mikaelsons race to rescue Klaus but find they also have other ancient threats to face.