Gustav Gloom and the Four Terrors (#3)

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In Gustav Gloom and the Four Terrors, things are not always what they seem in the Gloom Mansion. Gustav decides that he needs to rescue his father from the Dark Country, but he can’t do that without Fernie’s help. After Gustav convinces Fernie’s safety-conscious father to enter the Gloom Mansion with Fernie and Pearlie, there is a prison break from the Hall of Shadow Criminals and it’s up to Fernie to save her family and Gustav before it’s too late.

Featuring a unique paper-over-board cover, a die-cut window with printed acetate, and beautifully dark full-page illustrations by Kristen Margiotta.


“Adam-Troy Castro continues to give his readers a scary story within the Gloom estate, full of shadows, dangers, mystery, and appeal.”

San Francisco City Book Reviews

“I enjoyed the book. It’s fun and full of adventures, like the first two books […] I loved it all.”

Carina’s Book Review

“There aren’t enough words to describe how much I love this series! It’s spooky and quirky and incredibly amusing in places. The voice sucks me right in and keeps me reading…The combination of Adam-Troy Castro’s words and Kristen Margiotta’s illustrations guide the reader on another amazing adventure through the Gloom Mansion.”

Joan Stradling

Awards & Accolades


Bank Street Center for Children’s Literature: “Best Children’s Books of the Year”