Three thugs who kill a Chinatown grocer get off when a witness recants. Then, she's found murdered, as is one of the thugs, and the other two fear they'll be next. Meanwhile, Joe and Caitlin decide to go into business together, selling donuts online.

An investigation gets underway when it's discovered that Vietnamese women are being illegally brought into the country to be used as prostitutes and to appear in porn films. Meanwhile, Nash learns that his wisdom teeth must come out.