Synopses & Reviews
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?
Review
The champion deceiver of our time. (New York Times)
Synopsis
An emaciated stranger stumbles into Poirot's flat, shouts warnings of "the big four" and drops dead. Perplexing. Unfortunate. And for Poirot, an invitation to investigate.