Local author Wren Anderson signed copies of her latest book, Smile Spotters, at the main branch of the Williamson County Public Library. The book tells the story of Tooth Fairy helpers who encourage children to brush and floss their teeth regularly. The set includes a boy or girl Smile Spotter, which children can name and clip to their bathroom mirrors to report back to the fairy boss about the child's dental hygiene habits. The event featured the Smile Spotters themselves, and those in attendance were served treats and given toothbrushes to take home.