Catherine Steadman is an actress, author and screenwriter based in London. Her screenwriting debut, all four episodes of the screen adaptation of psychological thriller THE EX-WIFE, is now streaming on Paramount +, starring Celine Buckens (SHOWTRIAL) and Tom Mison (SLEEPY HOLLOW). Her first novel, psychological thriller, SOMETHING IN THE WATER, was a New York Times bestseller with rights sold in more than thirty territories. She is also the author of MR. NOBODY, THE DISAPPEARING ACT and THE FAMILY GAME, all published by Simon & Schuster in the UK and Random House in the US. As an actress, she has appeared in leading roles on British and American television as well as on stage in the West End, where she has been nominated for a Laurence Olivier Award.