I examined this book to fulfill the objective perused a bolted room puzzle. The "locked-room" or "impossible crime" riddle may be a sub-genre of analyst fiction in which wrongdoing is committed in circumstances beneath which it was apparently outlandish for the culprit to commit the wrongdoing or sidestep discovery within the course of getting in and out of the wrongdoing scene. I continuously appreciate a great Agatha Christie. I was a bit irritated when I thought the book was over and still no one truly knew who did it. I thought it was attending to take off a parcel of free untidy closes. be that as it may, after the epilog could be a decent chapter summing up and clarifying everything.