At the start of Mark Jacob’s remarkable new novel—his first book in thirteen years—thirty-seven-year-old Smith wins a “stash” of diamonds in a poker game. The only catch: he has to find them.A Louisiana native, Smith is currently employed on an oil platform off the west coast of Africa, while the diamonds are somewhere in the immense, war-torn Democratic Republic of the Congo.But Smith’s grown tired of the platform and he hates the idea of wasting a full house. One last adventure, he tells himself, and then, diamonds or no diamonds, he’s heading home to Louisiana.In Kinshasa, Smith meets a young woman named Béatrice, who hails from a village on the other side of the country.But this village, she tells Smith, is where his diamonds are—a thousand miles away as the crow flies, but significantly longer on the patchwork of guerilla-patrolled roads that traverse the country. If he helps her get home, she’ll show him where the stones are.What ensues is a guided tour of hell in which a not-so-