Harry is at boiling point. Haunted by nightmares of Cedric's death and plagued by visions of Voldemort's mind, he endures torturous detentions with Umbridge and constant lies from The Daily Prophet, leaving him seething with rage. Can Lupin and Sirius talk some sense into him and calm him down while they spend Christmas together at Grimmauld Place after Arthur Weasley's attack?