It started as an assignment. Everyone in Caitlin's class wrote to an unknown student somewhere in a distant place. Martin was lucky to even receive a pen-pal letter. There were only 10 letters, and 40 kids in his class. But he was the top student, so he got the first one. That letter was the beginning of a correspondence that spanned six years and changed two lives. In this dual memoir, Caitlin and Martin recount how they became best friends --- and better people --- through their long-distance exchange.