The Big 4 Author:Agatha Christie Murder was but a portion of the plan of the Big Four. A plan so sinister, so fantastic as to be almost beyond human belief. — Murder by a lovely ivory chessman, by curare, strychnine, arsenic and various other exquisite and exotic poisons, by electrocution, by explosion, by drowning and even by "natural causes." — Murder the smallest of the crimes... more » arranged by the Big 4.« less