From the publisher's website:

We shall see that at which dogs howl in the dark, and that at which cats prick up their ears after midnight. –H.P. Lovecraft, “From Beyond” It is 1926, and the museum’s exotic curios and occult artifacts open barriers between our world and the elder evils lurking between dimensions. Other Worlds begin to leak through and terrifying creatures of increasing strength steal through them. Animals, the mad, and those of susceptible minds are driven to desperation by the supernatural forces that the portals unleash. In the midst of this chaos, a handful of investigators race against time to locate the eldritch symbols necessary to seal the portals forever and stop evil Ancient Ones from reducing humanity to cinders. Elder Sign is a fast-paced, cooperative dice game of supernatural intrigue for one to eight players by Richard Launius and Kevin Wilson, the designers of Arkham Horror. Players take the roles of investigators racing against time to stave off the imminent return of the Ancient Ones. Armed with cards for tools, allies, and occult knowledge, investigators must put their sanity and stamina to the test as they adventure to locate Elder Signs, the eldritch symbols used to seal away the Ancient Ones and win the game.