Area 51 gets its first new resident in 5 years-and a new mystery.When her grandma moves into a kid-free retirement home, 12-year-old orphan Priya "Sky" Patel-Baum and Spike, her pet hedgehog, relocate to Area 51 to live with Sky's eccentric Uncle Anish. At 51, humans and Break Throughs (government-speak for aliens) live together off-grid in harmony. Unfortunately, several Zdstrammars (one of many Break Through species) mysteriously disappear, disrupting the base's harmony and contributing to feelings of suspicion. Despite being deputy head of the Federal Bureau of Alien Investigations, Uncle Anish becomes a prime suspect. Can Sky and Elvis, her alien classmate, prove Uncle Anish's innocence and find the missing Zdstrammars before it's too late? YA author Buxbaum's middle-grade debut is a rip-roaring series opener complete with over-the-top characters and jokes galore. Naidu's black-and-white cartoon illustrations extend the comedy with ongoing commentary that smartly interacts with the prose. The cast of Break Through species-like Audiotooters, Galzorian, and Sanitizoria-have hilariously creative on-the-nose names with illustrations to match. Sky is coded biracial, with a White dad and Indian mom. Aliens appear in a variety of shapes, sizes, and colors; Elvis shape-shifts but looks like a brown-skinned boy to Sky. Though the main mystery is neatly wrapped up, the cliffhanger ending promises more laughs.Contagiously goofy and fun. (Mystery. 8-12)

Gr 5 Up— A lighthearted mystery (with delightful illustrations) about accepting everyone just as they are. Priya "Sky" Patel-Baum is an orphan, and when her grandmother has to go to an assisted living facility, the 12-year-old ends up being sent to live with an uncle she has never met. It turns out he lives in Area 51, a top secret military base that is so classified not even the president knows its true purpose. (Rule What happens in Area 51 stays in Area 51). Not only does she discover that there are aliens in Area 51, but they start to disappear when she arrives. Is it a coincidence? Sky, who is Indian and white, meets unimaginably strange beings, such as the Audiotooters, who fart out of their ears and release a delightful whiff of roses. Drones that deliver pizza and secret hatches that lead to tunnels in the living room floor are just a few of the things Sky discovers as she and her friends try to solve the mystery of the disappearing aliens. The school bully turns out to be one of her partners in crime as she and Elvis the alien work to uncover the mystery and clear her uncle's reputation. Readers who like their science fiction with a touch of humor, such as Frank Cottrell Boyce's Sputnik's Guide to Life On Earth, will enjoy these sci-fic high jinks. VERDICT A solid purchase for libraries building their collection of middle grade science fiction.— Deanna McDaniel