Mind the door! - Steve Barlow

Manny O'Taur, the new caretaker, arrives at Perce and Andy's school and soon the door leading from his room to the boiler room, starts to swing open - no one who ventures through it ever returns. The missing children's parents are unconcerned but Perce and Andy know there's more monster trouble afoot. Manny O'Taur is the Minotaur of Greek legends, out for revenge on Perce and Andy for destroying Medusa (in STONE ME!). An impromptu bull-fight ends when the Minotaur brains itself and Perce and Andy release the prisoners.