Mercer Mayer's very funny and popular Little Critter character is at it again. In this lively picture book, he sees himself as the baby sitter's big helper, but his help ends up turning the house upside down. By the end of the evening Little Critter and his little sister still have energy to spare, while the well-meaning sitter is utterly exhausted. Book Description Little Critter does his enthusiastic best to help his babysitter, although his efforts frequently make a bad situation worse. Card catalog description Little Critter does his enthusiastic best to help his babysitter, although his efforts frequently make a bad situation worse.