Here are two mean and nasty words: Mrs. Cakel Something has gone wrong in Danny and Calvin's fourth-grade classroom—out of the blue, Mrs. Cakel has transforme

Danny and Calvin decide to find out why their fourth-grade teacher, Mrs. Cakel, is suddenly behaving very strangely by not only failing to enforce her many rule

When Mrs. Cakel transforms from a rampant rule-enforcer to a quiet excuse-accepter, Danny and Calvin begin a secret investigation and encounter a variety of mys

Calvin Waffle doesn't believe in bad ideas Danny knows his friend Calvin has crazy ideas, so he's not surprised when Calvin suggests they start a Rent-a-Pet bus