Cavern of the Fear — Emily Rodda

Welcome to the Shadowlands -- the terrifying and mysterious domain of the evil Shadow Lord. He has gone there to refuel his dark sorcery, taking thousands of Deltoran hostages with him. They will become slaves to darkness . . . unless they are saved.

To rescue them, Lief, Barda, and Jasmine must find a weapon powerful enough to combat the Shadow Lord's magic on his own ground. Terrifying monsters and mind-bending riddles stand in their way. But these heroes won't be able to rest until the last hostage is freed.