When it comes to relationships, Colin Singleton’s type is girls named Katherine. And when it comes to girls named Katherine, Colin is always getting dumped. Nineteen times, to be exact. Now, on a road trip far from home, this washed-up child prodigy is on a mission to prove The Theorem of Underlying Katherine Predictability, which he hopes will predict the future of any relationship and avenge Dumpees everywhere. Love, friendship, and a dead Austro-Hungarian archduke add up to surprising and heart-changing conclusions in this ingeniously layered comic novel.