Another Christie book adapted as a play &, as in previous plays, the original detective (in this case, Superintendent Battle) has been removed from the cast as well as various other extra characters who, in the book, provide clues, but aren't needed in the play. The murderer, the murder, & the reason remain the same; the difference is that the character of the man who tried to commit suicide has an expanded role &, more or less, takes the place of Battle & solves the crime rather than just provides the needed clue. This play was quite enjoyable.