Poirot's final bow

This Sunday, David Suchet returns in the first of his final run of mysteries as Agatha Christie's Hercule Poirot in "The Big Four." This is SO bittersweet for me, as Poirot was one of my first introductions to British film...and now to see Suchet in the final episodes? When they broadcast Curtain (which isn't yet scheduled on Masterpiece's website), I will BAWL MY EYES out.