4866 The Knight Bus is a Harry Potter set released on June 1, 2011. It recreates the scene in Harry Potter and the Prisoner of Azkaban in which Harry Potter is rescued by the Knight Bus, a transport for a stranded witch or wizard, after fleeing Number 4 Privet Drive after accidentally inflating his Aunt Marge. The set is a remake of the earlier set 4755 Knight Bus, and has noticeable improvements and added detail to the original incarnation of the scene. The set costs $34.99 and includes the minifigures Harry Potter, Stan Shunpike, and Ernie Prang. Also included is Harry's owl Hedwig and a printed cylindrical piece to represent the Shrunken Head.