(2) 4-6 Kairos Files series. This sequel to The School for Invisible Boys (rev. 1/24) shifts its focus to twelve-year-old Samantha Osbourne, budding agent for the clandestine paranormal research group Kairos, as she navigates adolescence, grief, and monsters. Sam is sent on a covert mission to recover a top-secret list created by recently deceased, eccentric Kairos agent Lionel Frobisher. Using her unique ability to alter her appearance in others’ minds, Sam disguises herself as Lionel’s cousin Sunny for a visit to his Seattle home. When the strange Draven family ­simultaneously moves in next door, Sam’s suspicions are raised. Hutchinson’s complex story line interweaves the fantastical (living buildings, magic glasses, deadly stuffed animals) with relatable tween concerns (such as feeling “exposed” in a two-piece swimsuit). Details around the loss of Sam’s parents in a fire and the surprising revelation about the Kairos organization’s true motives add narrative depth. Brief chapters, intriguing dilemmas, and near-constant twists will keep readers on edge throughout this substantial addition to a thoroughly creepy and captivating adventure series.

Reviewer: Patrick Gall | Horn Book Magazine Issue: May, 2025