A Poirot Double Bill

In The Wasp's Nest, Hercule Poirot comes between a bitter triangle of lovers to prevent a sinister murder before it takes place.  In Yellow Iris, A distressed phone call from a mystery woman brings Hercule Poirot to the hotel Jardin des Cygnes, where a man commemorates the four-year anniversary of his wife’s sudden death – a death under very suspicious circumstances that Poirot himself witnessed. Gathered is everyone present on that fateful night and now Poirot must find a killer in the midst, before they strike again.