My Teacher is an Android. Dark Space, #1

Dark Space #1Is your substitute teacher... human?Kayla Baines is pretty sure Mr. Asher isn't. He doesn't blink. He moves like he's gliding. And somehow, he knows everything about her class-before anyone says a word. At first, Kayla thinks she's imagining things. But then the pop quizzes start grading themselves, kids begin acting strange, and permission slips appear out of nowhere with her mom's signature.
Something is seriously wrong. With the help of her best friend Jaden and a mysterious girl named Rowan, Kayla discovers a secret underground lab, a network of android educators, and a terrifying plan to replace people-one perfect copy at a time. Trapped in a high-tech experiment, the three kids must figure out who they can trust, who's already been replaced... and how to shut everything down before it's too late.
Perfect for fans of Goosebumps, Animorphs, and Stranger Things, My Teacher Is an Android is a creepy, fast-paced sci-fi horror adventure full of twists, tech, and the kind of teacher you'll never forget.