-Steve, Danny, and Chin Ho search for a college chemistry professor's murderer. They discover that he was murdered after harvesting a rare plant with valuable medicinal properties--by one of three different suspects, whose guilt was decided by internet viewer poll as the episode aired (EST airing killer: the Professor).

-Kono watches over a rowdy Sang Min, who was placed in protective custody before testifying in a federal trial. After he escapes from custody, Kono tracks him down and finds that he was trying to romantically surprise his wife--who has changed her name and remarried.