Strange things are happening in Monkeyland, the ailing Devonshire sanctuary that Patrick and his zoologist wife, Jane, took on in a bid to save their marriage. Their oldest female primate, the wise and gentle Rue, is found murdered in a corner of the compound. And a big, panther-like cat, preys around the park. It evades capture, lurking in the shadows and in the back of Patrick's mind. With Patrick's son, Charlie, having left Monkeyland in disgrace and his wife on a field trip in Zaire, Patrick is left alone with his black cat and his fears. Until one night something happens that is so shocking, so deplorable, that it rips apart everything Patrick has ever held to be true...