What's the point of trying to leave a mark when everything disappears? This question is at the heart of Proof I Was Here, a novel that tells the picaresque coming-of-age story of a young thief and aspiring artist who attempts to reboot her life on the streets of Barcelona after an unexpected breakup. Hailing from Toronto, where she has an assault charge waiting, Niki is outside of Canada for the first time. The pickpockets, squatters, and graffiti...