Like clockwork, California computer hacker Merle Corey is nearly murdered every April 30th by a persistent unknown assailant. For, in reality, Merle is Merlin, son of the missing, possibly mad Prince Corwin of the royal house of Amber. But bestial claws have ripped too close to Merlin's heart this time -- forcing him to flee Shadow Earth with his remarkable Ghostwheel. And now Merlin's destiny resides in the one true world -- where answers can only beget more dangerous questions . . .