Other editions of book New Adventures of Mary-Kate & Ashley #42: The Case of the Cheerleading Tattletal:

Mary-Kate and Ashley are back at cheerleading camp and their squad is practicing hard to win the big competition. Each day they create unique cheers and stunt, but somehow, within hours, the rival squad seems to find out about it and put it into their own routine. Someone on the twins' squad is a snitch. Can the twins find and stop the tattletale in time?