Battle of the Zombies (Awfully Beastly Business)

Ulf and Dr. Fielding take on their most dangerous mission yet in their fifth adventure Ulf visits a haunted castle to investigate some very spooky goings-on. But little does he know that he's heading into a trap: the evil Baron Marackai is lying in wait with a beastly plan—and this time he has help from the dead! Can Ulf unravel the ghostly mystery, or will he end up as zombie food?