Cal, Sarah 's Books
A very well recieved series by Cal, Sarah are the books, featuring tropes. The most popular books are Lights Out (Book 4): New Frontier, Lights Out (Book 2): Under Attack, Lights Out (Book 1): The Crash, Lights Out (Book 3): Front Lines, which was published in 2022.
Lights Out (Book 4): New Frontier
Lights Out (Book 2): Under Attack
Lights Out (Book 1): The Crash
Lights Out (Book 3): Front Lines