The epic fifth and final instalment in the bestselling fantasy series The Power of Five by Anthony Horowitz. Having escaped from Hong Kong, the Five Gatekeepers - Matt, Pedro, Scott, Jamie and Scarlett - are scattered in a hostile and dangerous world. As they struggle to re-group and plan their next move, the malevolent King of the Old Ones gathers his forces in Oblivion: a desolate landscape where the last survivors of humanity must fight the ultimate battle.