The ghost's skull is a quest item used in The Restless Ghost. It is found in the Wizards' Tower basement by searching the altar.
After searching the altar a skeleton will appear. Killing it is not necessary, and you may run if you want to. Putting the skull back into the restless ghost's coffin will complete the quest.
- The ghost's skull similar to the skull which can be obtained in the Wilderness.
- If you use the ghost's skull on the Restless ghost will say "I can't give it to him. It goes right through him."