On Valentine's Day, Tani and Noelani are held hostage during a convenience store robbery. Also, Five-0 investigates the murder of a Thai diplomat whose wife confesses to the crime, but Danny suspects she's covering for the real killer.

Cast: Alex O'Loughlin, Scott Caan, Ian Anthony Dale, Meaghan Rath, Jorge Garcia, Beulah Koale, Chi McBride, Katrina Law, Taylor Wily, Dennis Chun, Kimee Balmilero, Shawn Mokuahi Garnett, Eddie Anderson, Jess A. Cruz, Marika Dominczyk