It is a deep shame that Beyond the Nightmare Gate is now hard to find. This is one of the greatest adventure books ever written, and if you can find a copy from Amazon, it's well worth it!
We join our hero Grey Star in another plane, the Daziarn. A realm of nightmares and ghosts await the reader, who must battle the fiendish enchantments of the Black Crystal Tower, the Chaos Lord, the ancient god of discord, the Neverness, holes that lead to the past and future that never was and never will be, a mountain that moans, and a whole assortment of twisted foes before the final challenge: to dive into a shimmering lake-to another dimension, and fight his shadow twin in a duel for the Moonstone and human's salvation.
From the magnificent flying Ethetron to a terrible lizard that turns those who look at it into stone to the mysterious Room of the Mirrors, you will be amazed by the depth and magnificence of Joe Dever's work. Despite it's HTF status, Beyond the Nightmare Gate and, to a lesser extent, its sequel and predecessors, are definitely worth your time and money