MASTERPIECE | Hercule Poirot: A Scene from The Big Four | PBS

Watch the full-length episode at https://video.pbs.org/video/2365290361/?utm_source=youtube&utm_medium=pbsofficial&utm_campaign=mast_coverfullprogram (US Only)
See a scene from Hercule Poirot: The Big Four, adapted by Sherlock’s Mark Gatiss, and premiering Sunday, July 27, 2014, 9pm ET on MASTERPIECE Mystery on PBS.