A limited edition module produced exclusively for Gen Con Indy 2003 where the module's author, Dave Arneson, was available to sign it.
From the publisher:
A terrible storm forces the players to take refuge in a lighthouse that warns travelers of a nearby moor. But what appears at first glance to be a safe haven is in fact a trap set by the malevolent ghost of a long-dead troll. Can the players find and slay the ghost troll? Or will they be trapped forever in the haunted lighthouse?