Hercule Poirot, the greatest detective of all time, tries to uncover the truth.
American actress Sylvia Wilkinson has long stopped hiding that she would like to get rid of her husband, Lord Edgeware. After all, she has a man—more well-known and even richer—on her mind… So when Edgeware is found dead in his own office, no one has any doubts about Sylvia’s guilt. Especially since some circumstances point directly to her involvement in her husband’s death. The actress asks the great detective Hercule Poirot to help her save her name from an indelible disgrace. But how can the detective believe Wilkinson that she is innocent, if not long ago the newly made widow asked Poirot for an entirely different favor—to help her get rid of her husband?..