It features her Belgian detective Hercule Poirot and the recurring character Ariadne Oliver. Movies. See the full list of Poirot: Third Girl cast and crew including actors, directors, producers and more. "Poirot" Third Girl (TV Episode 2008) cast and crew credits, including actors, actresses, directors, writers and more. With David Suchet, David Yelland, Jemima Rooper, Zoë Wanamaker. Girl on the Third Floor is a 2019 horror film directed by Travis Stevens, written by Stevens, Paul Johnstone and Ben Parker, and starring CM Punk, Trieste Kelly Dunn and Tonya Kay.The film tells the story of a deeply flawed husband who renovates an old home for himself and his wife, and the supernatural events that ensue while they live there. Directed by Dan Reed. Oscars Best Picture Winners Best Picture Winners Golden Globes Emmys San Diego Comic-Con New York Comic-Con Sundance Film Festival Toronto Int'l Film … After a seemingly neurotic young heiress tells Ariadne Oliver and Poirot that she thinks she may have killed someone, her ex-nanny is found with her wrists slashed. Menu. Third Girl (Hercule Poirot #38), Agatha Christie Third Girl is a work of detective fiction by Agatha Christie and first published in the UK by the Collins Crime Club in November 1966.