Marisol McDonald loves the letter M and almost everything beginning with that letter, except the monster that lives under her bed. Every night she wakes her family when she hears it. They try to convince her there’s no such thing as a monster, while Marisol tries to conquer her fears by making a stuffed toy monster. But she still hears the bumps in the night. On the night everyone else finally hears them, too, an investigation reveals the amusing source (though sharp-eyed readers and listeners may have already figured it out). Marisol has an Anglo father and a Latina mother. The inclusion of Spanish words in the English text and English words in the Spanish text is natural and fluid. The mixed-media illustrations show Marisol as brown-skinned like her mother and red-haired like her father in this pleasing story. (Ages 4–7)