When Nikki Maxwell discovers that mean-girl Mackenzie is planning to spread rumours about Brandon in her school newspaper column, Nikki decides to join the paper to keep an eye on her.

Assigned to the role of Miss Know-It-All, the paper's agony aunt, at first Nikki has fun answering letters from kids at school, but when her inbox starts overflowing, she feels in need of some help herself! Can Nikki keep up with demand and stop Mackenzie from getting Brandon into trouble?

The fifth book in the bestselling Dork Diaries series by Rachel Renée Russell.