… first novel in the Poirot series set at least partly in the courtroom, with lawyers and witnesses exposing the facts underlying Poirot’s solution to the crimes.

The title is drawn from a song in Shakespeare’s play Twelfth Night. …

One reviewer remarked “it is economically written, the clues are placed before the reader with impeccable fairness, the red herrings are deftly laid and the solution will cause many readers to kick themselves.” …

wikipedia

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