In Praise of the Stepmother is a novel by the Peruvian writer Mario Vargas Llosa, published in 1988. The main character, Don Rigoberto, marries Lucrecia. He has a son Alfonsito, a boy of angelic appearance with mind that seems pure and bright. Soon, the reader discovers that all of the characters, and especially Alfonsito, are full of naughty desires. Everyone who reads this book will be surprised and feel the full range of emotions.