Kiersten White
Author
Language
English
Appears on list
Description
Twins Theo and Alexander along with their sister Wil are abruptly dropped off at their Aunt Saffronia's house, where they learn they must complete a series of tasks in order to see their parents again, the first of which is solving a mystery at the Fathoms of Fun waterpark.
2) Camp creepy
Author
Language
English
Description
Twins Alexander and Theo, their older sister Wil, and their friend Edgar find themselves at the mysterious Camp Creek where they meet other families whose parents are missing. Although things seem normal, the twins are sure something strange is going on and they must save themselves before they are stuck there forever.