3x15 - Riptide

The guys then go to see a man named Parker who had called in response to one of the Danny Lee posters. The guys learn that Parker originally saw Danny Lee with a briefcase handcuffed to his hand, however, when Parker later saw Lee, the handcuff was hanging loose. Unfortunately, Parker is killed before the detectives can learn anymore. The guys then pay a visit on Janet, who reveals that her government branch has been working with a man named Danny Lee for over 10 years. Janet further explains that Lee, who had been providing information about China's nuclear arms development, had been scheduled to come to San Francisco to meet with the U.S. government. The guys, piecing together the clues, realize that a Chinese spy has killed Danny Lee and is taking his place for the San Francisco meetings. Janet then tells the guys about the next scheduled meeting. The guys proceed to the meeting site only to find a murdered government agent. Later, after Lucy arrives in town and confirms that the ha