Sonic the Hedgehog in Castle Robotnik



It's the FrankenSonic monster! In this, the fourth book in the series, Dr. Robotnik plots to defeat that pesky hedgehog once and for all - by building a bolt-together, Frankenstein version of Sonic.

Werewolves, vampires and mummies lie in wait for Sonic and his sidekick, Tails, as they venture into Robotnik's mountaintop castle for a cataclysmic confrontation.