From the #1 bestselling author of Turtles All the Way Down and The Fault in Our Stars Michael L. Printz Honor Book Los Angeles Times Book Prize Finalist New York Times Bestseller When it comes to relationships,Colin SingletonΓÇÖs type is girls named Katherine. And when it comes to girls named KatherineColin is always getting dumped. Nineteen timesto be exact. On a road trip miles from homethis anagram-happywashed-up child prodigy has ten thousand dollars in his pocketa bloodthirsty feral hog on his trailand an overweightJudge JudyΓÇôloving best friend riding shotgunΓÇöbut no Katherines. Colin is on a mission to prove The Theorem of Underlying Katherine Predictabilitywhich he hopes will predict the future of any relationshipavenge Dumpees everywhereand finally win him the girl. Lovefriendshipand a dead Austro-Hungarian archduke add up to surprising and heart-changing conclusions in this ingeniously layered comic novel about reinventing oneself.