Diana Wynne Jones 
Deep Secret [EPUB ebook] 

The renowned fantasy author’s multiverse adventure "combines strong writing, high fantasy heroics and delightfully dark humor to sparkling effect" (Publishers Weekly).Rupert Venables is a Magid. It’s a Magid’s job to oversee what goes on in the vast Multiverse. Actually, Rupert is really only a junior Magid. But he’s got a king-sized problem. Rupert’s territory includes Earth and the Empire of Korfyros. When his mentor dies, Rupert must take his place-and find his own replacement. But with hundreds of candidates scattered across the Multiverse, how is he supposed to track them down, let alone choose? Rupert decides to bring the magids together in one place-and this year’s Phantasma Con seems like the perfect place to do it . . .