National Bestseller National Book Critics Circle Award Nominee From the Pulitzer Prize-winning author of The Overstory and the forthcoming Bewilderment, a magnificent double love story of two young couples separated by a distance of twenty-five years. "The most lavishly ambitious American novel since Gravity's Rainbow . . . An outright marvel." --Washington Post Stuart Ressler, a brilliant young molecular biologist, sets out in 1957 to crack the genetic code.