Gage goes to Israel to help with peace talks.

The CIA tracks an Algerian suicide bomber as he enters the United States, but they don't realize that he is infected with the smallpox virus.

Justin sells weapons to the mob.

When the National Security Agency (NSA) learns of a plot to assassinate the King of Saudi Arabia, Matt and Lisa help track down those involved only to discover that there is a larger terrorist plot in the works. Soon after Matt and Lisa catch the would-be assassins, Israeli intelligence informs the CIA that one of the incarcerated terrorists is their own agent on an undercover mission and requests his safe return. Once Matt arranges this, the Agency discovers that Israeli intelligence has deceived them and the man they released is a link to a terrorist they had been pursuing for years.

A blown operation leads to a Senate inquiry into possible wrongdoings at the CIA. The CIA tries to turn a Columbian druglord and terroist into an informant, but the operation goes awry when a DEA officer tips off the police as to the operation causing the deaths of seven people.

Gage tells Matt to blow up a chemical weapons plant in sudan,even though 100 people work inside.

The CIA tries to stop nuclear war between to countries.

Lex learns that a possible bomb attack may occur in Australia, Gage doesn't want to act because terrorists may another attcak on the U.S.

David Cassidy (Everett Price) who lost his wife on 9/11 hurts the relationship between the U.S. & Saudi Arabia, Now Gage must try and stop anymore missile attacks.

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Tom and Carl learn that a story about a war crime Tom allegedly committed during his service in Vietnam is about to be revealed in the press and that the source of the story has been found dead. Meanwhile, Matt and Jackson receive word that a visiting Eastern European dictator is near death and they enlist a hooker to help determine how ill he really is. At the same time, Joshua must deal with a museum curator when he accidentally destroys a cow costume that's part of an upcoming exhibit.

Ouinn tells everybody stiles is missing now everyone puts their holiday plans on hold to find him.

Stiles heads to west Africa to help former CIA informants and runs into someone he loved.

Terri is thought to be alive after Stiles & Agent Shelton discover her car and watch. Terri is kidnapped to find who Terri told about the double life of Joshua and how Terri found out. Terri still won't let her captors know who she told she then has a bomb hooked to her. Meanwhile Terri learns that Joshua was told to kidnap her and that she should trust him. Haisely then tells Quinn that Joshua may have taken Terri, Quinn finds the information hard to believe and wonders why Mr. Holland didn't say anything. Quinn tells Haisley that 12 years ago (when Quinn was director) He had Joshua feed information to Germany. Gage asks Holland to feed German information to the CIA while still trying to free Terri.

When a CIA plane crashes in China, the operatives must hide the evidence before it is discovered.

Stiles and Terri head to the Gaza Strip in search of a U.S. citizen who left America with his wife due to a killing spree at a travel agency.

Terri Lowell is about to get a big shock the man she dated in college could be a double agent because his company could be shipping weapons to North Korea (behind his back) his wife is actually doing it. Quinn learns his sister is dying. He has to find her in the car at sunset. Terri and stiles continue try to find the guidance system. Terri learns Brain wants to leave his wife. Caroline quickly finds out and tries to protect him. Quinn finds that his sister killed herself and kisses her goodbye. Terri goes to meet him and finds him dead and his wife may have killed him. Terri is questioned about wether she got bad information.

CIA tries to uncover if someone has sneaked a Russian atomic bomb into the US.

Gage must decide whether a hijacked plane carrying Stiles and Lex should be shot down

Just how far will the CIA go to get what it wants? Gage and the team must try and stop an election in Indonesia which puts a terrorist supporter in the run for Pesident. James Graydon a former U.S. President wants to see the election go through nicely.

A ambitious journalist plans to run a career-making story about one of the Agency's great Cold War successes, which will expose and therefore cost the life of a now retired Russian general who risked his life to help Director Pierce and the CIA. The journalist refuses to kill the story, and Director Pierce and his team must do everything they can to protect the Russian, even if it means putting another life in jeopardy. Meanwhile, Terri's estranged husband begins divorce proceedings, and Matt pushes Jackson for answers about his brother's mysterious death.

The president's brother is in an accident, which put the CIA in a bind.

Teri is taken to Stiles to his home. The Incident Response Team heads to Ireland to stop arms dealers.

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Agents of the CIA go to France to find Matt's killer. When the Secret Service, CIA, FBI, and INS fail to inform each other, Robert Quinn forms an Incident Response Team to work with the CIA, FBI, Secret Service and INS.