No genre is as popular at the moment than the murder mystery. With shows like Only Murders in the Building and The Afterparty as well as the trio of films based on Agatha Christie's iconic detective Hercule Poirot, the "who done it" is a proven narrative concept that continues to succeed on the big and small screen. While Poirot novels have no shortage of film adaptations. Murder on the Orient Express, Death on the Nile, and A Haunting in Venice are three Christie novels that have been adapted into modern-day theatrical successes by brilliant director Kenneth Branagh and with a treasure trove of Poirot stories available. Here are ten Hercule Poirot books that should be made into movies next.