num_pages: 32
description: Jennie's dog, who is good at solving mysteries, helps her friend Billy discover the source of the mysterious knocking at his house.
language: English
title: My Dog and the Knock Knock Mystery
titlecomplete: My Dog and the Knock Knock Mystery (My Dog Mysteries, #2)
genres: Picture Books
ratings_count: 10
series: My Dog Mysteries
publisher: Holiday House