Title rated 4.1 out of 5 stars, based on 88 ratings(88 ratings)
Book, 2014
Current format, Book, 2014, , Available .
Book, 2014
Current format, Book, 2014, , Available . Offered in 0 more formats
Cam, her best friend Eric, and Eric's mom are spending the day with Eric's grandparents. But Grandpa and Grandma seem too tired to visit. Every so often, a knock at the door wakes them up. But when they go to answer, no one is there. Is a Knock, Knock Ghost on the loose? It's up to Cam to solve the mystery!
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