This is a very special blog post! Screenwriter and actor Ian Hallard kindly offered to do a Q&A on the process of adapting Agatha Christie's Poirot stories for television. He has co-written The Big Four (2013) with Mark Gatiss, and acted as a script associate on the other adaptations Gatiss has scripted, Cat Among the Pigeons (2008) and Hallowe'en Party (2010). He also played Edmund Drake in Hallowe'en Party, and appeared in a cameo as Mercutio in The Big Four.
This Q&A offers a rare glimpse behind-the-scenes of the television series we all love. A big thanks to Hallard for taking the time to do this!
SPOILERS on Cat Among the Pigeons, Hallowe'en Party and The Big Four follow. Don't read on if you haven't seen the adaptations.