UP COUNTRY Nelson DeMille (Warner, $26.95, on sale Jan. 29) The best-selling author of The General’s Daughter sets the sequel in Vietnam, where his hero confronts double crosses, corruption, and a comely expatriate who just may be a spy.

SERVANTS OF THE MAP: STORIES Andrea Barrett (Norton, $24.95, on sale Feb. 4) From the National Book Award-winning author of the short-story collection Ship Fever come six new tales about the intersection of science and humanity.

THE SUMMONS John Grisham (Doubleday, $27.95, on sale Feb. 5) The legal eagle returns with his annual February gift to readers (and his publisher). His latest revolves around a divorced law professor reeling from his father’s death.