Sammi Rotibi

Using a screwdriver and bug spray, MacGyver must find the U.S. government mole who is leaking classified intel to the organization that is trying to take down The Phoenix Foundation. Also, Sarah (Amy Acker) returns to help with the mission, and Nikki (Tracy Spiridakos) reappears, but Mac can't tell which side she's on.

Team Scorpion is blackmailed into breaking into the United Nations to help with the assassination of an arms dealer; Sylvester tries to protect Megan's wishes.

While conducting a flight test, Harm ends up involved in a serious CIA mission, over North Korea.

After receiving intelligence that the ports have been breached, placing the Navy and the Gulf Coast in harm's way, Pride and the NCIS team follow every angle to determine what has entered their city and how they can put a stop to the Broussard Syndicate, who seem to always be one step ahead of them. Dylan Walsh, Steven Weber and Stacy Keach guest star.

The body of a Russian woman is found in an alleyway. Gang members open fire from a city bus.