The Sleeper Rising

From the publisher's website: In Act 1: The Sleeper Rising, you and your fellow heroes are caught between the religious police and a cabal of hidden cultists. Recruited by the king of Axphain, you must begin to root out the cultists. You discover a network of tunnels converging on the Royal Place, which leads to high-stakes intrigue and investigation. At the King’s masquerade ball, an eldritch horror is unleashed, and the ultimate abomination rises above the city! Yet, this is only the beginning – volume 1 of The Big Sleep – an entire campaign devoted to exploring the terrors and wonders of the Great Old One Tsathoggua – the Sleeper.