Writer Sarah Phelps told the BBC that she was shocked by the starkness and brutality of the novel. Comparing the novel to Christie's other work, she stated, "Within the Marple and Poirot stories somebody is there to unravel the mystery, and that gives you a sense of safety and security, of predicting what is going to happen next... In this book that doesn't happen – no one is going to come to save you, absolutely nobody is coming to help or rescue or interpret."[9]