Brilliant but emotionally-guarded Caro Drake arrives in Oxford with the singular goal of attaining her PhD, but through a turbulent friendship with a charming young man she starts to open herself up to mystery, vulnerability, and love.

Harry starts his fourth year at Hogwarts, competes in the treacherous Triwizard Tournament and faces the evil Lord Voldemort. Ron and Hermione help Harry manage the pressure – but Voldemort lurks, awaiting his chance to destroy Harry and all that he stands for.

Ignoring threats to his life, Harry returns to Hogwarts to investigate – aided by Ron and Hermione – a mysterious series of attacks.