The Mysterious Mr. Quin (Tainstvennyy Mister Kin)

The mysterious Mr. Harley Kean appears and disappears suddenly. It's no wonder his name is so similar to 'Harlequin.' He always appears as a friend to lovers, but his appearance is associated with death. This book contains twelve stories (mystical and not so) about Mr. Kean. Agatha Christie herself considered this enigmatic Harlequin one of her favorite characters.