Bestselling author for young readers John David Anderson will sign and discuss his new middle-grade novel, “Posted.”

When cell phones are banned at Branton Middle School, Frost and his friends come up with a new way to communicate: leaving sticky notes for each other all around the school. It catches on, and soon all the kids in school are leaving notes—though for every kind and friendly one, there is a cutting and cruel one as well. In the middle of this, a new girl named Rose arrives at school and sits at Frost’s lunch table. Rose is not like anyone else at Branton Middle School, and it’s clear that the close circle of friends Frost has made for himself won’t easily hold another. As the sticky-note war escalates, Frost soon realizes that after this year, nothing will ever be the same.

This event is free and open to the public, but proof of purchase of “Posted” from Left Bank Books will be required to enter the signing line.