Oscar Ollie Brown is on the hunt! Ants and frogs and cows are making his life miserable and he's determined to put them in their place. There's just one problem: they're invisible. And poor Oscar! His life is plagued with creatures he can't see. A cow licks his head every night, and that's just for starters. He's also had ants in his pants and a frog in his throat, but try as he might, he can't seem to find them. Even so, he knows they're there. How? Because his mother tells him so! Fortunately, author Valerie Sherrard knows how to craft a good story, and she certainly knows children. In addition to raising her own, she has fostered more than 70 others and was the director of a group home for teens for ten years.