Nora Okja Keller once heard a former Korean sex slave speak about the horrors of being kept in what can only be described as “stalls” and forced to service Japanese soldiers during World War II. The Seoul-born author was so moved by the event that she sat down and penned her debut novel, the wildly acclaimed Comfort Woman which skillfully explores a slice of WWII we are only now beginning to acknowledge. The novel, told in alternating voices—those of a former wartime slave and her contemporary twentysomething daughter—is a mother-daughter saga that also grapples with culture clash and the search for identity. Keller reads at 6 p.m. at Vertigo Books, 1337 Connecticut Ave. NW. FREE. (202) 429-9272. (Gina Vivinetto)