Colin Singleton, former child prodigy and serial-dater of girls named Katherine, embarks on a road trip with his best friend Hassan to attempt to get over Katherine-19, who just dumped him. The two end up in small-town Gutshot Tennessee, making connections with the locals, and Colin attempts to create a formula that will predict the ends of his future relationships. Colin's struggles with reading social situations and the strange way his mind jumps from subject to subject are well-rendered in the storytelling and are especially evident in the slew of clever footnotes that pepper the pages. Perhaps because of the full development of Colin, the other characters are only viewed on the surface. However, despite the simple characterization, teens of both genders will find An Abundance of Katherines a fast-paced, fun read.