The Fly Team and new Europol liaison Megan "Smitty" Garretson investigate the murder of an American detective on the Federal task force in Paris.

The Fly Team attempts to bring a local predator to justice when he begins extorting underage American girls online.

The Fly Team heads to Mallorca to investigate the death of an American murdered on her powerful father-in-law's estate.

The team races against the clock to organize the release of a former U.S. Marine detained in Istanbul.

The Fly Team searches Bucharest for a Romanian surrogate who goes missing shortly before carrying the biological child of an American couple to term.

The Fly Team attempts to help Vo's U.S. Navy friend track down her missing nephew in Crete.

The Fly Team questions the innocence of an American businessman after his bodyguard and girlfriend are kidnapped.

Vo goes undercover when the Fly Team investigates the mysterious death of an American model in Milan.

The Fly Team races to halt a major art heist about to be perpetrated by an American.

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 Fly Team races to find a kidnapped American teen in Austria as the clock ticks on Forrester's reassignment.

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 investigates the death of an American lawyer working out of Budapest, Hungary, after he is killed by a car bomb.

The team investigates a bomb threat on a plane flying from New York to Athens that is forced to land in Morocco.

The Fly Team lends a helping hand to the Hungarian National Police when one of their police officers is accused of murdering a couple in Budapest.

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.