Books by Nykko

To stay alive and return home, Rebecca and her friends must strike the Master of Shadows at the source of his powers, a crumbling castle fiercely guarded by the Shadow Spies.

After discovering that Grandpa Gabe has sealed the passageways between worlds, Max, Rebecca, Theo, and Noah must confront the Master of Shadows himself to find another way home.

"Lexile level: 350"--Publisher's website.

"Lexile level: 300"--Publisher's website.