Cathryn Kemp is a Sunday Times bestselling ghost writer and author with a prolific career writing celebrity, inspirational, true crime, and nostalgia titles. Her personal memoir, Coming Clean, won the Big Red Read Prize for Nonfiction. For A Poisoner's Tale, her first foray into historical fiction, she was awarded a foundation grant by the Society of Authors to pursue the research for this book, reaching into the state archives of Palermo and the Vatican's secret Holy Office of the Inquisition. She lives on the south coast of England.