Derek the Ghost

ブック
Scary School #3: The Northern Frights Scary School #3: The Northern Frights
Scary School #3: The Northern Frights
2013年
Scary School #2: Monsters on the March Scary School #2: Monsters on the March
Scary School #2: Monsters on the March
2012年
Scary School Scary School
Scary School
2011年

オーディオブック
Scary School Scary School
Scary School
2016年