Serena, Hazel, and Emrys, along with a talking book named Van Stavern, are members of an ancient organization that’s responsible for safeguarding magical items to keep them from those who would use them for evil, protecting the public and foiling their dangerous counterpart, the Yellow Court. Serena’s own magical relic, the Aegis, allows her to view magical entities as they really are, rather than how they present themselves. This comes in handy when her “spooky sense” alerts her to something being off about Shadowglass, a streamer who exerts mysterious power over their followers, several of whom have wound up dead. Finding out what’s going on with Shadowglass takes on a greater urgency when Serena’s brother, Dom, becomes the focus of the streamer’s attention. The characters balance magical assistance with using their own common sense and intuition, and the villain is chilling but not too scary for a middle-grade audience. This latest installment will be a hit with series fans but can also be enjoyed by those who haven’t read the earlier books. A shocking reveal at the end promises additional adventures for the Order. Serena is Black, and she and Dom have two dads. Emrys and Hazel read white.