The unexpected guest -- The man from the asylum -- We hear more about Li Chang Yen -- The importance of a leg of mutton -- Disappearance of a scientist -- The woman on the stairs -- The radium thieves -- In the house of the enemy -- The Yellow Jasmine mystery -- We investigate at Croftlands -- A chess problem -- The baited trap -- The mouse walks in -- The peroxide blonde -- The terrible catastrophe -- The dying Chinaman -- Number four wins a trick -- In the Felsenlabyrynth.
Summary
They are formidable enemies in their own rights: a French scientist, an American millionaire, a brilliant Chinese gentleman, and a master of disguise. But together they are the Big Four, a partnership with one simple goal, murder. Hercule Poirot has never come up against an opponent so vicious, or so deadly.
