Don't Ever Get Sick at Granny's is a novella written by R. L. Stine and Jahnna N. Malcom. It was first published in 1997 and is the sixteenth book the the Ghosts of Fear Street book series.
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Dad said, "Don't ever get sick at Granny's".
Now Corey knows why. After he's dropped off at Granny Marsha's for the weekend, his temperature skyrockets. And Granny goes into action.
She's determined to destroy every last germ in Corey's body--even if it means destroying Corey!