Avi 
School of the Dead 

In this spine-tingling story from Newbery Medal winner Avi, a boy must solve the mystery of the ghost haunting him.For most of Tony Gilberts life, he has thought of his uncle as Weird Uncle Charlie. That is, until Uncle Charlie moves in with Tony and his family. Uncle Charlie is still odd, of coursetalking about spirits and other supernatural stuffbut he and Tony become fast friends, and Tony ends up having a lot of fun with Uncle Charlie.When Uncle Charlie dies suddenly, Tony is devastated. Then he starts seeing Uncle Charlie everywhere! It doesnt help that Tony switched schoolsit was Uncle Charlies dying wish that Tony attend the Penda School, where Uncle Charlie himself went as a kid. The Penda School is eerie enough without his uncles ghost making it worse. On top of that, rumors have been circulating about a student who went missing shortly before Tony arrived. Could that somehow be related to Uncle Charlies ghost?Full of twists and turns that get spookier by the chapter, School of the Dead is a fast-paced mystery that Avis fans will devour!