Felix O'Neill and his friend Dr. Garzon investigate the secret sciences of the shapeshifter, the berserker and the werewolf. Here the master detective tries to solve a mystery in a remote swampland where a cunning murderer has terrorized the simple folk of the old waterways, jungles and fens. The question was, Who or what was the werewolf? Felix O'Neill had been working on a theory for some time that according to known science it is normally impossible to impersonate anyone in appearance, voice and personality to such an extent as to fool old friends. In fact, he believed that disguise was the key to the mystery and not merely an ordinary disguise but rather a high level of metamorphosis or shapeshifting. However Professor Vermillion, who was a science professor, believed that metamorphosis was not an acceptable explanation as it almost smacked of the supernatural. Felix O'Neill reminded her that it was a very natural process but of course too advanced for the scientists of today to quite understand. Dr. Garzon had come across those who sell their soul to the devil in order to gain power over others. They certainly had the power to delude others and to hide by disguise was a very great power indeed. The professor tells the others what she thinks of their analysis of the mystery - Dr. Garzon with all due regard to your religious beliefs and Mr. O'Neill with every respect to your scientific analysis and strong investigative imagination, can I humbly just point out that there is a disease of the genes known as lycanthropy or werewolfism. Also, it is well established that the full moon exercises a tyrannical power over the minds and bodies of humans. Lunatics are those who are over-sensitive to Luna - the moon. The tides are subject to the moon, so also are our bodies and our minds. If a person has somehow been born with wolf-genes or by some similar misplacement of nature, then surely the wolf or other animal in the human will spring out at the time of the full moon. Dr. Garzon avers to the others that the wolfman is a child of devilry not a chance mismatch of nature. He tells them that truly the wolf is an unlucky omen, death, disaster, doom and that the Good Book says - Beware of false prophets in sheep's clothing but inwardly they are ravening wolves and again - Ravening wolves will enter in among you, not sparing the flock. The professor warns the others that if there is any truth in their theories at all, then almost anyone could be the werewolf. Including you Professor Vermillion, says Felix O'Neill.
