XANDER MILLER has lived in Ohio, Washington, Arizona, New Mexico, California, and Pennsylvania. He worked at national parks and monuments, and as an emergency medical technician. After the 2010 earthquake, he traveled to Haiti, where he served as a volunteer EMT and founded a nonprofit called Ambulance for Haiti; he also met his wife, Naomi, in her hometown of Petit-Goâve. He is currently a physician assistant, and Zo is his first novel.