"The Lacuna" is a poignant story of a man pulled between two nations as they invent their modern identities.Born in the United States, reared in a series of provisional households in Mexico--from a coastal island jungle to 1930s Mexico City--Harrison Shepherd finds precarious shelter but no sense of home on his thrilling odyssey. Life is whatever he learns from housekeepers who put him to work in the kitchen, errands he runs in the streets, and one fateful day, by mixing plaster for famed Mexican muralist Diego Rivera. He discovers a passion for Aztec history and meets the exotic, imperious artist Frida Kahlo, who will become his lifelong friend. When he goes to work for Lev Trotsky, an exiled political leader fighting for his life, Shepherd inadvertently casts his lot with art and revolution, newspaper headlines and howling gossip, and a risk of terrible violence.