Agatha Christie's Poirot: The Movie Collection, Set 5

"Distressed young heiress Norma Restarick comes to see Hercule Poirot about 'a murder she might have committed.' The detective consults an old acquaintance, crime novelist Ariadne Oliver, who lives in the same building as the young woman and her two roommates. When Norma's childhood nanny is found dead, apparently by suicide, Poirot believes he has identified the victim. Next he must deduce the killer, while Norma's family fears for her sanity"--Container.