While the sixth instalment in the Harry Potter franchise does venture into darker, more adult areas than its predecessors it also injects more humour and character development than previous encounters, which doesn't always make for a satisfying concoction. Yates picks up in the aftermath of a spectacular attack on London by Death Eaters and builds towards the death of a key character that will pre-empt the final confrontation between Harry and Lord Voldemort in two-part finale, The Deathly Hallows.