Mary Anne just loves her little kitten, Tigger. So when he disappears one afternoon, Mary Anne is a little concerned. the next morning Tigger is still missing ... and Mary Anne is frantic. It’s time for an emergency meeting of the Baby-sitters Club. the girls pool together a reward for the return of Tigger, and they search everywhere for him ... until Mary Anne receives a frightening letter in the mail. Someone has taken Tigger, and Mary Anne must pay a hundred dollars to get him back. Is this some mean practical joke ... or has Tigger really been cat-napped?