Agatha Christie's Poirot - The Big Four - Episode Review

And so it begins. The gang is officially together again for the first time in thirteen years (though also the last, for Japp and Ms. Lemon.) Unfortunately, it’s only for a few scenes in this eccentric but enjoyable addition to the Poirot series. The Big Four was Agatha Christie’s attempt at a conspiracy thriller, mixed among the usual Poirot body-in-the-library cases. She couldn’t quite leave that format behind, and her conspiracy conveniently takes the shape of multiple murders in country houses. Mark Gatiss and Ian Hallard’s adaptation is at its strongest when it is focusing on these quirky, clever episodes.

Because of the relative insignificance of the terrorism (especially in light of our own age), it’s a little hard to build up a conspiracy thriller feel around the mysterious Big Four gang. Gatiss and Hallard give it a good try, but like Christie, can’t quite shake off the limitations of Poirot’s format.

It’s 1939. World War II is brewing, and a group called the Peace Party has formed to foster good faith between nations. It is led by an American millionaire (isn’t is always), Abe Ryland, and a French scientist, Madame Olivier. But beneath their veneer of benevolence, lurks a more sinister purpose—or so claims Tysoe, a journalist and conspiracy theorist, played a bit blandly by Tom Brooke (you may remember him from Sherlock and Foyle’s War.)