Children of the Twilight Tower

From publisher blurb: A brand new and exciting adventure written by Skip "The Sage" Williams. Made for Dungeons and Dragons 3.5 but compatible with Pathfinder and could be used with DnD 5th edition (with some adjustments). With highly detailed maps of the five floors of the mighty tower. Made for 8-10th level characters. The tower "The road skirts the base of a rocky tor, and a badly eroded path branches off. The narrow track climbs the craggy slope in a series of loops. A gloomy looking tower with at least five distinct spires crowns the tor. A few raucous birds soar and circle around the highest spire."