Beyond the Nightmare Gate(1992)
(The third book in the World of Lone Wolf series)
A Game Book by Joe Dever and Ian Page
Grey Star is in another plane, the Daziarn. A realm of nightmares and ghosts await our hero, 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 other 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. A fine feast of action sci-fi.
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September 1992 : USA Paperback
January 1986 : UK Paperback