剧情简介：在线阅读本书 An emaciated stranger approaches Hercule Poirot, shouts a warning about "the big four" and drops dead. Who knew Poirot's inquiry into the man's odd behavior would lead to an underground laboratory, an insane asylum, and rumors of a secret weapon?
作者：Agatha Christie
出版社：Berkley
ISBN：9780425098820
