Madness in Freeport, the final part of the Freeport Trilogy, details the final confrontation between the PCs, the Brotherhood of the Yellow Sign, and Sea Lord Milton Drac. In Part One, the Drac invites the PCs to the Grand Lighthouse Ball. Careful investigation can reveal the secret purpose of the lighthouse. In Parts Two and Three, the PCs must recover a powerful artifact to thwart the Brotherhood's plans. They must pass through an infamous pirate's hidden caves, then search a sunken temple of the serpent god Yig. In Part Four, the heroes must enter the Grand Lighthouse, AKA Milton's Folly, in a race against time to stop the Brotherhood's world-shaking master plan from coming to fruition. (Bibliographic note: This adventure was originally written for v.3.0, and later updated to the v.3.5 rules. The revised versions of Death, Terror, and Madness in Freeport were reprinted in an omnibus edition, along with two shorter filler adventures, as The Freeport Edition: Five Year Anniversary Edition.)