The Perfect Pumpkin Pie

When he was alive, Mr. Wilkerson was an ill-tempered, disagreeable, sour, and impatient old man. Once he died, he got better.
But not much.
Now he is back and very, very hungry.
When Jack and his grandma move into the old Wilkerson house, they find out just how hungry, and why.
At least they think they know. It has something to do with pie.
A perfect pie.