Gilbert the Goblin is positive he can work harder than any elf, and so, in his best elf disguise, he infiltrates Santa's workshop to prove it.

Learning magic is no easy thing, even for young Claudia. Despite a bit of help from a book of spells created by Kpp'Ar, her father's former mentor, it's all she can do to keep things from blowing up in her face--often with spectacularly messy results. But a spell book isn't the only thing that Kpp'Ar left behind when he suddenly and mysteriously vanished. In his wake stands the Puzzle House, a bizarre tower full of magical traps, tricks, contraptions,...