About 9 a.m. on Oct. 20, 2016, a family friend discovered Mei “Marian” Chu Chung, 57, and Cheng “David” Long Wang, 60, inside their home in the 3300 block of Bent Twig Lane in Diamond Bar, authorities said. The couple had been stabbed to death after an apparent struggle, and more than $10,000 in cash was missing from the home, said Los Angeles County Sheriff’s Capt. Steve Katz. The case remains unsolved. Anyone with information is asked to call the Sheriff’s Department Homicide Bureau at (323) 890-5500. Those who wish to remain anonymous can call Crime Stoppers at (800) 222-8477.