Meet Mary McScary. Mary likes to be scary. She scares her mom, her dad, her pets, and even a balloon! But there's just one person Mary can't scare -- her cousin, Harry McScary. He's not afraid of the usual things, like spiders, snakes, and other creepy crawlies. But Mary doesn't give up that easily, and one way or another she'll find a way to give Harry the scare of his life. . . Beware of Mary McScary!