Families who loved Gustav Gloom and the Nightmare Vault by Adam-Troy Castro often look for books with a similar feel. These 20 recommendations were selected for their similarity in style, theme, and reading level.
Reach for this book when your child is grappling with nighttime fears or feeling like an outsider who doesn't quite fit in with the crowd. It is a perfect choice for kids who enjoy a 'creepy-cute' aesthetic and need to see that courage isn't about being fearless, but about showing up for others even when your knees are shaking. The story follows Fernie and her shadow-world friend Gustav as they race to protect the Nightmare Vault from a villain who devours shadows. Beyond the spooky thrills, the book explores the deep emotional value of loyalty and the idea that our 'darker' or weirder parts are what make us unique. While it contains monsters and shadows, the tone remains adventurous and darkly humorous, making it an excellent bridge for middle-grade readers who want to test their bravery without being truly traumatized.
