Description
By: David A. Adler | Illustrator: Susanna Natti
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!
Garden State Children’s Book Award 2017 Nominee.
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!
Garden State Children’s Book Award 2017 Nominee.
You may also like
熱銷中 Top Trending
![Kensuke's Kingdom - Egmont Modern Classics (Paperback) (Michael Morpurgo) Harpercollins (UK)](http://buybookbook.com/cdn/shop/products/Kensuke_sKingdom-EgmontModernClassics_Paperback_{width}x.jpg?v=1633790093)
Kensuke's Kingdom - Egmont Modern Classics (Paperback) (Michael Morpurgo)
Sale priceHK$60.00
Regular priceHK$104.00
In stock![Disney Pixar Inside Out 2 Ultimate Sticker Book](http://buybookbook.com/cdn/shop/files/Disney_Pixar_Inside_Out_2_Ultimate_Sticker_Book_{width}x.webp?v=1719485214)
Disney Pixar Inside Out 2 Ultimate Sticker Book
Sale priceFrom HK$44.00
Regular priceHK$65.00
In stock![Diary of a Roblox Pro #1: Monster Escape (Ari Avatar)](http://buybookbook.com/cdn/shop/products/DiaryofaRobloxPro_1_MonsterEscape_AriAvatar_{width}x.jpg?v=1677462026)
![Diary of a Roblox Pro #1: Monster Escape (Ari Avatar)](http://buybookbook.com/cdn/shop/products/DiaryofaRobloxPro_1_MonsterEscape_AriAvatar_1_{width}x.jpg?v=1677462026)
Diary of a Roblox Pro #1: Monster Escape (Ari Avatar)
Sale priceHK$48.00
Regular priceHK$71.90
In stock![Diary of a Roblox Pro #2: Dragon Pet (Ari Avatar)-Fiction: 歷險科幻 Adventure & Science Fiction-買書書 BuyBookBook](http://buybookbook.com/cdn/shop/products/DiaryofaRobloxPro_2DragonPet_AriAvatar_{width}x.jpg?v=1699221600)
Diary of a Roblox Pro #2: Dragon Pet (Ari Avatar)
Sale priceFrom HK$43.00
Regular priceHK$70.00
In stock![Diary of a Roblox Pro #3: Obby Challenge (Ari Avatar)-Fiction: 歷險科幻 Adventure & Science Fiction-買書書 BuyBookBook](http://buybookbook.com/cdn/shop/files/DiaryofaRobloxPro_3ObbyChallenge_{width}x.jpg?v=1699229226)
Diary of a Roblox Pro #3: Obby Challenge (Ari Avatar)
Sale priceFrom HK$43.00
Regular priceHK$70.00
In stock![Burt the Beetle #02 Burt the Beetle Lives Here! (Ashley Spires)](http://buybookbook.com/cdn/shop/files/9781525310119_1_{width}x.jpg?v=1717229304)
![Burt the Beetle #02 Burt the Beetle Lives Here! (Ashley Spires)](http://buybookbook.com/cdn/shop/files/9781525310119_2_{width}x.jpg?v=1717792217)
Burt the Beetle #02 Burt the Beetle Lives Here! (Ashley Spires)
Sale priceHK$101.00
Regular priceHK$150.00
In stock![Pearson Longman Level-up! English Test Papers (with Online diagnostic assessment^破解常犯錯誤)-Supplemental: 英文科 English-買書書 BuyBookBook](http://buybookbook.com/cdn/shop/files/e1a_{width}x.webp?v=1712704159)
![Pearson Longman Level-up! English Test Papers (with Online diagnostic assessment^破解常犯錯誤)-Supplemental: 英文科 English-買書書 BuyBookBook](http://buybookbook.com/cdn/shop/files/e1b_{width}x.webp?v=1712704165)
Pearson Longman Level-up! English Test Papers (with Online diagnostic assessment^破解常犯錯誤)
Sale priceHK$63.00
Regular priceHK$73.00
In stock![Percy Jackson and the Olympians #6 The Chalice of the Gods (Rick Riordan)-Fiction: 神話傳說 Myth and Legend-買書書 BuyBookBook](http://buybookbook.com/cdn/shop/files/PercyJacksonandtheOlympians_6TheChaliceoftheGods_RickRiordan_{width}x.jpg?v=1714881796)
Percy Jackson and the Olympians: The Chalice of the Gods (International paperback edition)
Sale priceHK$89.00
Regular priceHK$140.00
In stock