When Turner Prize-winning artist Simon Dykes wakes up one morning after a wild night out, he finds his world has changed beyond recognition. His girlfriend, Sarah, has turned into a chimpanzee. And to his horror, so has everyone else. Immediately rushed to hospital, Simon is taken into the care of charismatic radical psychiatrist Zack Busner and treated for being under the psychotic delusion that he's human. Great Apes is Will Self's hilarious, disturbing and dazzlingly original take on man's place in the evolutionary chain.