Karen English is a Coretta Scott King Honor Award-winner and the author of It All Comes Down to This, a Kirkus Prize Finalist, as well as the Nikki and Deja and The Carver Chronicles series. Her novels have been praised for their accessible writing, authentic characters, and satisfying storylines. She is a former elementary school teacher and lives in Los Angeles, California.

Calvin is sad that his friends next door are moving away, especially when he realizes that Harper, the biggest bully at Carver Elementary, is moving in! Meanwhile, competition at the school science fair is heating up, and Calvin must decide what to do when his data doesn't prove his theory. Can Calvin avoid trouble with Harper and still win the science fair?
Calvin está triste porque sus amigos de la casa de al lado se mudan, en especial cuando se da cuenta de que Harper, el peor bravucón de la Primaria Carver, ¡vivirá en esa casa! Mientras tanto, se está animando el clima de la competencia para la feria de ciencias de la escuela. Calvin debe decidir qué hacer cuando sus datos no confirman su teoría. ¿Podrá Calvin evitar los problemas con Harper y, además, ganar la feria de ciencias de la escuela?