The Revenge of the Baby-Sat (ISBN 0836218663) is the fifth Calvin and Hobbes printed collection. It was released in April 1991 by Andrews & McMeel and collects the strips published from December 1988 to September 1989. The included Sunday strips were reprinted in color in The Indispensable Calvin and Hobbes and The Complete Calvin and Hobbes. The title springs from an included story arc in which Calvin and Hobbes "get back" at Rosalyn by preventing her from studying.