Ferocious (Vicarious, Bk. 2)

When Winter Kim finds out her sister is dead and that she has a brother she never knew about, only two things matter - finding what's left of her family and killing the man who destroyed her life. Her mission leads her from St. Louis to Los Angeles back to South Korea, where she grew up. Things get increasingly dangerous once Winter arrives in Seoul. She must decide: Is revenge worth sacrificing everything for?