Warner Bros. Online today launched the fifth episode of "Arcane: The Stone Circle," the online mystery serial inspired by the fiction of H.P. Lovecraft. In Episode 5, Dr. Gregor MacDermoth visits an old college friend, who sets him on a journey through a strange museum. Will he find valuable clues or be overcome by hidden dangers?

Arcane is an episodic online graphic adventure inspired by the pulp serials of the 1920’s and by H.P. Lovecraft’s Cthulhu Mythos. Now in its second season, this ongoing horror adventure pits three investigators of the supernatural against a mysterious man known only as the Cardinal and his terrible death cult. It's up to you to stop the Cardinal from restoring the reign of the Great Ancients over Earth and dooming humanity to an eternity of servitude.