Before World War II, the real-life Lévitan was an exclusive furniture store catering to French elites, but during the Nazi occupation of Paris, it became something more sinister: a satellite concentration camp where prisoners were forced to sort and display items looted from Jewish apartments to be sold to German officers. Helaine, a fictitious occupant of Lévitan, is separated from her husband, a cellist with the Parisian symphony, and struggling to keep her hope for a reunion alive. Years later, Louise, a former wartime volunteer delivering packages for the Red Cross, encounters a secondhand necklace whose origins connect back to Lévitan and to her closest friend, Franny, who was killed when she may have been trying to return the necklace to its owner. Jenoff weaves the two women’s storylines together to create an intriguing mystery. (Park Row, Feb. 4)