When an American basketball player for a Lithuanian team goes into cardiac arrest, the Fly Team investigates along with Zoey McKenna, the new agent appointed by Dandridge.
The team meets with Jaeger in Berlin. They delve into a case involving an unidentified American who killed an elderly German man who appears to have been a covert asset of the ruthless Stasi in East Germany during the Cold War.
The team is joined by Jubal Valentine and Nina Chase when the abduction of an American architect appears to relate to a brewing terror threat in the US.
The Fly Team heads to Vienna to find the culprit of an acid attack on a rising American prima ballerina. Also, Smitty receives some troubling intel from a familiar face.
The Fly Team jumps into action to protect Forrester when a Russian hitman seeks revenge on him. Also, Raines is sent into a tailspin when someone close to him is taken.
After an American tourist is murdered while visiting Stockholm with his girlfriend, the Fly Team must work together to take down a Swedish group responsible for the hate crime.
After a cybersecurity expert robs one of Switzerland's largest and most secretive banks, the Fly Team is called to track down the fugitive. Also, Smitty's loyalty is put to the test.
The Fly Team jets off to Portugal when the daughter of a prominent American hotelier becomes the primary suspect in the murder of an employee. Also, Raines becomes concerned about Vo.
When a Russian missile is stolen and put on the black market in Budapest, the Fly Team must secure the weapon before a mysterious American arms broker delivers it into the wrong hands.