Dare you brave The Sinister Spire? The Sinister Spire is the second of a three-part adventure arc that started with Barrow of the Forgotten King, but is easily played as a stand-alone adventure. Chasing the tomb-robbers from Barrow of the Forgotten King into the Underdark, the heroes stumble upon a desolated subterranean city with a dark secret. This 64-page adventure is designed for 4th-level characters and uses a combat encounter format designed to make the DM"s job easier.