In Harry Potter and the Half-Blood Prince, Voldemort (Ralph Fiennes) is tightening his grip on both the Muggle and wizarding worlds and Hogwarts is no longer the safe haven it once was. Harry (Daniel Radcliffe) suspects that dangers may even lie within the castle, but Dumbledore (Michael Gambon) is more intent upon preparing him for the final battle that he knows is fast approaching.

Harry Potter and the Half-Blood Prince, Michael Gambon and Daniel Radcliffe, 2009. © Warner Bros.