The Rat Pack is a 1997 Muppet storybook about Rizzo the Rat and his friendly gang of ten biker rats, who are on a tour of the United States of America. One by one, the members are lost to distractions or mishaps. A color tattoo bearing a "Rizzo's Rat Pack" logo was included. The book's structure is based on the diminishing rhyme "Ten Little Indians," which formed the basis of the Agatha Christie book and play, and for two Sesame Street animated inserts -- "Ten Little Greeblies" (narrated by Gary Owens) and "Five Purple Conkers."