One of the most enduring themes in literature through the ages has been the internal conflict between two sides of a single character. It manifests itself in different ways, from the classic werewolf story to souls which are invaded by evil spirits to the pseudo sci-fi of Jekyll and Hyde to strange tales of total amnesia, as in Barry Pain's masterpiece "The Missing Years". This collection brings together a selection of different tales, in each of which tension is created when a human soul is split into more than one part.

• "The Mysterious Card" by Cleveland Moffett
• "The Missing Years" by Barry Pain
• "The Strange Case of Dr. Jekyll and Mr. Hyde" by Robert Louis Stevenson
• "The White Wolf of the Hartz Mountains" by Frederick Marryat
• "Gabriel-Ernest" by Saki
• "A Pastoral Horror" by Sir Arthur Conan Doyle
• "The Mark of the Beast" by Rudyard Kipling
• "The Voice" by A. J. Alan
• "The Parasite" by Sir Arthur Conan Doyle
• "The Beast with Five Fingers" by W. F. Harvey
• "The White Dog" by Fedor Sologub