The Event

Sean Walker (Jason Ritter) stumbles into a national conspiracy after his girlfriend Leila (Sarah Roemer) mysteriously disappears from a Caribbean cruise. Elsewhere, President Elias Martinez (Blair Underwood) is scheduled to announce the release of a group of detainees led by Sophia Maguire (Laura Innes) -- despite the disapproval of his Director of National Intelligence, Blake Sterling (Zeljko Ivanek). Their futures are on a collision course in a global conspiracy that could ultimately change the fate of mankind. Scott Patterson, Ian Anthony Dale, Clifton Collins, Jr., Taylor Cole, Lisa Vidal and Bill Smitrovich also star in the ensemble drama. Tony Todd, Lauren Stamile, Julia Campbell, Gonzalo Menendez, Joseph C. Phillips, Casey Siemaszko, Omid Abtahi, Angel Desai, Wynn Everett, Michael Cummings, Lorena Segura York, and Wes Ramsey guest star. Directed by Jeffrey Reiner.

As the shockwave of the plane dissipates, President Martinez's (Blair Underwood) staff must work quickly to assess what happened and how to respond. Director of National Intelligence, Blake Sterling, (Zeljko Ivanek) locks down Sophia (Laura Innes) for interrogation. The conspiracy widens, engulfing FBI Agent Collier (guest star Heather McComb) and Carter (guest star D. B. Sweeney), a mercenary with questionable ties. Meanwhile, a shadowy figure, Thomas (Clifton Collins, Jr.), emerges with knowledge of the detainees and their plan.

President Martinez's (Blair Underwood) administration unveils a tough new strategy to force Sophia (Laura Innes) to reveal the detainees' plan, putting into play a new detainee, Maya (guest star Clea DuVall). Elsewhere, we learn that Vicky (Taylor Cole) and Carter (guest star D. B. Sweeney) are in possession of a crucial hostage. FBI Agent Collier's (guest star Heather McComb) suspicion grows deeper.

The White House grapples with a mysterious biological threat. Their only hope is to crack Sophia (Laura Innes) during interrogation. Meanwhile, Vicky (Taylor Cole) and Carter (guest star D.B. Sweeney) keep their hostage captive while they await further instructions. FBI Agent Collier (guest star Heather McComb), on her search for Leila (Sarah Roemer), stumbles upon Vicky's secret life. Elsewhere, a powerful businessman, Dempsey (guest star Hal Holbrook) with classified intelligence and ties to the White House, emerges from the shadows. Jason Ritter, Blair Underwood, eljko Ivanek, Clifton Collins, Jr., Ian Anthony Dale, Scott Patterson, Lisa Vidal, and Bill Smitrovich. Directed by: John Badham.

The biological threat intensifies. The CDC rushes to identify the contagion and treat the infected people, while the White House and Director of National Intelligence (Zeljko Ivanek) face a difficult dilemma in their negotiation with Thomas (Clifton Collins, Jr.). Meanwhile, Simon (Ian Anthony Dale) appeals to Sophia (Laura Innes) to turn on Thomas. Elsewhere, FBI Agent Collier (guest star Heather McComb) closes in on Vicky (Taylor Cole) and Carter (guest star D.B. Sweeney), but appearances are not always what they seem. Jason Ritter, Sarah Roemer, Blair Underwood, Scott Patterson, Lisa Vidal, and Bill Smitrovich. Directed by: Milan Cheylov.

President Martinez (Blair Underwood) and the Director of National Intelligence, Blake Sterling (Zeljko Ivanek), fulfill their agreement with Thomas (Clifton Collins, Jr.), but after their plan goes awry, they suspect that there is a possible mole in their midst. Elsewhere, Sean Walker (Jason Ritter) digs for answers at Leila's home, where he encounters Madeline (guest star Paula Malcomson), a mysterious conspiracy theorist. Meanwhile, Simon's (Ian Anthony Dale) past is illuminated, and his allegiances are tested. Sarah Roemer, Laura Innes, Scott Patterson, Lisa Vidal and Bill Smitrovich also star. Directed by: Jonas Pate.

President Martinez (Blair Underwood) orders Director of National Intelligence, Blake Sterling (Zeljko Ivanek), to root out the mole from their staff, which causes Sterling to question his judgment of people close to him. Sophia (Laura Innes) reasserts her power over Thomas (Clifton Collins, Jr.) and the other detainees, and she prepares them for the next leg of their mission. Elsewhere, with the aid of Madeline (guest star Paula Malcomson), Sean (Jason Ritter) and Leila (Sarah Roemer) continue their hunt for answers, all the while trying to stay one step ahead of the covert agents who trail them. Ian Anthony Dale, Scott Patterson, Lisa Vidal, and Bill Smitrovich also star.

President Martinez (Blair Underwood), furious about recent security failures, demands answers from Director of National Intelligence, Blake Sterling (Zeljko Ivanek). When he doesn't receive the progress that he desires, Martinez decides to personally interrogate Michael Buchanan (Scott Patterson) about his involvement in the assassination attempt. While Michael holds to his claim that he doesn't know who is involved, he inadvertently reveals incriminating evidence about someone deep inside the President's staff. Meanwhile, Dempsey (Guest Star Hal Holbrook) dispatches Vicky (Taylor Cole) on a new clandestine mission. And, elsewhere, Sean (Jason Ritter) and Leila (Sarah Roemer) scramble to stay ahead of the covert ops that are trying to silence them and what they know. Laura Innes, Ian Anthony Dale, Bill Smitrovich and Lisa Vidal also star.

President Martinez (Blair Underwood) reacts to the knowledge of who betrayed him within his administration. Meanwhile, after revealing her plan for the Sleepers' future, Sophia (Laura Innes) learns of dissension among her people. She sets a trap for the perpetrators and acts decisively to quell any future mutiny. Elsewhere, Sean (Jason Ritter) and Leila (Sarah Roemer) try to unravel the mystery of Samantha's kidnapping, while evading Dempsey's (Hal Holbrook) nefarious clutches. Ian Anthony Dale, Bill Smitrovich, Taylor Cole, Lisa Vidal, and Clifton Collins, Jr. also star.

President Martinez (Blair Underwood) confronts the traitor in his administration, only to be met with threats of exposing the cover-up of Avias Air 514. Even after testing the loyalty of Isabel (guest star Necar Zadegan) and Thomas (Clifton Collins, Jr.), Sophia (Laura Innes) still suspects their subterfuge, so she sends Simon (Ian Anthony Dale) on a fact-finding mission. Her suspicions are confirmed when Thomas unveils a shocking new plan. Meanwhile, on the hunt for Samantha, Sean (Jason Ritter) and Leila (Sarah Roemer) battle the mercenaries sent by Dempsey (guest star Hal Holbrook). Zeljko Ivanek, Bill Smitrovich, Taylor Cole, and Lisa Vidal also star.

President Martinez (Blair Underwood) and his longtime Chief of Staff (guest star Roger Bart, "Desperate Housewives") charge the intelligence community with decrypting Thomas's (Clifton Collins, Jr.) satellite message, but more importantly determining to whom it was sent. Meanwhile, on the other side of the Capital, Alaskan Senator Catherine Lewis (guest star Virginia Madsen, "Sideways") begins her first day on the job. Sophia (Laura Innes) has an emotional reunion with Michael Buchanan (Scott Patterson). Elsewhere, Sean (Jason Ritter) and Leila (Sarah Roemer) get a fresh lead on the whereabouts of Samantha, while Dempsey (guest star Hal Holbrook, "Water for Elephants") foretells the future. Zeljko Ivanek, Ian Anthony Dale, Bill Smitrovich, Taylor Cole, and Lisa Vidal also star.

President Martinez (Blair Underwood) and his longtime Chief of Staff (guest star Roger Bart, "Desperate Housewives") charge the intelligence community with decrypting Thomas's (Clifton Collins, Jr.) satellite message, but more importantly determining to whom it was sent. While they are distracted, Thomas unveils a surprise attack, but he does not anticipate a heroic stand-off with Blake Sterling (Zeljko Ivanek), who learns an important lesson about Sleepers from Maya (guest star Clea DuVall, "Conviction"). Meanwhile, newly appointed Alaskan Senator Catherine Lewis (guest star Virginia Madsen, "Sideways") threatens to divulge information about the Mt. Inostranka detention facility on an episode of "HARDBALL with Chris Matthews" (playing himself). Elsewhere, Sean (Jason Ritter) and Leila (Sarah Roemer) get a fresh lead on the whereabouts of Samantha, but it leads them to a dramatic turn in their lives. James Dempsey (guest star Hal Holbrook, "Water for Elephants") foresees that he and Sean will once again cross paths. Ian Anthony Dale, Bill Smitrovich, Taylor Cole, and Lisa Vidal also star.

Still reeling from the attack in Alaska, President Martinez (Blair Underwood) reasserts control over the situation and his administration, counseled by Sterling (Zeljko Ivanek) and his Chief of Staff (guest star Roger Bart, "Desperate Housewives"). Sophia (Laura Innes) learns the details of Thomas's murderous rampage. Thomas (Clifton Collins, Jr.) sets Sophia and Martinez further at odds. Elsewhere, Michael (Scott Patterson) leaves Leila (Sarah Roemer) in safekeeping with a close friend, Diane Geller (guest star Gabrielle Carteris, "Beverly Hills, 90210"), while he goes on the hunt for Thomas. The NSA continues to decrypt the satellite transmission, hopefully before it's too late. Ian Anthony Dale, Bill Smitrovich, Taylor Cole, and Lisa Vidal also star.

Thomas (Clifton Collins, Jr.) summons Sophia (Laura Innes), Diane Geller (guest star Gabrielle Carteris, "Beverly Hills, 90210"), and the other Sleepers to reveal the contents of the game-changing message he received. With newfound intensity, President Martinez (Blair Underwood) confronts Vice President Ray Jarvis (Bill Smitrovich) about his betrayal. Sean (Jason Ritter) blackmails Vicky (Taylor Cole) into helping him on a mission of vengeance. Elsewhere, Dempsey (guest star Hal Holbrook, "Water for Elephants") continues on his hunt for experimental subjects. Sarah Roemer, Ian Anthony Dale, Scott Patterson, Zeljko Ivanek, and Lisa Vidal also star.

President Martinez (Blair Underwood) and Blake Sterling (Zeljko Ivanek) have the Sleepers surrounded, but after Sophia (Laura Innes) triggers a national disaster, negotiations ensue. Elsewhere, with a lead on the whereabouts of Dempsey (guest star Hal Holbrook, "Water for Elephants"), Sean (Jason Ritter) and Vicky (Taylor Cole) continue on their mission. Sarah Roemer, Ian Anthony Dale, Clifton Collins, Jr., Scott Patterson, Bill Smitrovich and Lisa Vidal also star.

Sophia (Laura Innes) and the other Sleepers mourn their losses after negotiations are derailed. While observing Simon's (Ian Anthony Dale) reaction to the events, Sterling (Zeljko Ivanek) begins to doubt his loyalties and devises a test. President Martinez (Blair Underwood) tasks Senator Catherine Lewis (guest star Virginia Madsen, "Sideways") with rooting out any other moles within the White House. Elsewhere, Sean (Jason Ritter) and Vicky (Taylor Cole) are on the verge of tracking down Dempsey (guest star Hal Holbrook, "Water for Elephants"), but it may be exactly what he was anticipating. Sarah Roemer, Clifton Collins, Jr., Scott Patterson, Bill Smitrovich, and Lisa Vidal also star.

Vice President Jarvis (Bill Smitrovich) vocalizes his lack of faith in President Martinez's (Blair Underwood) leadership and agrees to meet with an adversary. Senator Catherine Lewis (guest star Virginia Madsen, "Sideways") reports the findings of her surreptitious blood testing of the White House staff only to find one holdout, someone very close to the President. Sophia (Laura Innes) pushes forward in her search for a super weapon. And, after witnessing injustices within the Sleeper community, Leila (Sarah Roemer) begins to question where she belongs. Elsewhere, Sean (Jason Ritter) and Vicky (Taylor Cole) find whom they've been hunting for, but it may be too late. Ian Anthony Dale, Scott Patterson, Zeljko Ivanek, and Lisa Vidal also star.

The White House is rocked by the sudden illness of one of their own, leaving Chief of Staff Peel (guest star Roger Bart, "Desperate Housewives") and Sterling (Zeljko Ivanek) to investigate possible conspirators. Michael Buchanan (Scott Patterson) comes to the aid of Leila (Sarah Roemer), but it leaves them both at risk of Sophia's wrath. Across the globe in Russia, Sean (Jason Ritter) and Vicky (Taylor Cole) race to stop Sophia's weapon from being loaded onto a plane heading to the United States. Blair Underwood, Ian Anthony Dale, Bill Smitrovich, and Lisa Vidal also star.

The White House grapples with the unfolding tragedy as Sterling (Zeljko Ivanek) continues the investigation into his primary suspect. Sophia (Laura Innes) manipulates the traitor inside the White House, confirming the suspicions of Chief of Staff Peel (guest star Roger Bart, "Desperate Housewives"). Leila (Sarah Roemer) and Michael (Scott Patterson) attempt to rescue Simon (Ian Anthony Dale), but at tremendous personal risk. Elsewhere, Sean (Jason Ritter) and Vicky (Taylor Cole) try to identify Sophia's secret courier before it's too late. Blair Underwood, Bill Smitrovich, and Lisa Vidal also star.

With doubt still surrounding the tragedy at the White House, Sterling (Zeljko Ivanek) encounters an unlikely ally in Simon (Ian Anthony Dale), who risks his life to return with a possible antidote. Against the wishes of Chief of Staff Richard Peel (guest star Roger Bart, "Desperate Housewives"), Jarvis (Bill Smitrovich) authorizes an air strike to neutralize them. Meanwhile, Sophia (Laura Innes) continues on her diabolical plan to exterminate the human race, now with the help of an unwitting accomplice -- Leila (Sarah Roemer). Elsewhere, Sean (Jason Ritter) and Vicky (Taylor Cole) try to prevent the deaths of many thousands of innocent people. Blair Underwood and Lisa Vidal also star.

President Martinez (Blair Underwood) makes a triumphant albeit shaky return to the White House, determined to punish the traitors who conspired against him. Sophia (Laura Innes) forges ahead with her plan, while battling a new enemy -- the guilt that has begun to plague her. Sean (Jason Ritter) and Vicky (Taylor Cole) form an impromptu team with Sterling (Zeljko Ivanek) and Simon (Ian Anthony Dale) in order to track down Sophia's headquarters and stop her before the destruction of all human life. Sarah Roemer, Bill Smitrovich, and Lisa Vidal also star.

The White House is gripped by a power struggle of historic proportions, pitting Martinez (Blair Underwood) and Chief of Staff Peel (guest star Roger Bart, "Desperate Housewives") against Jarvis (Bill Smitrovich) and his secret ally, Sophia (Laura Innes). Elsewhere, Sean (Jason Ritter), Vicky (Taylor Cole), Sterling (Zeljko Ivanek), and Simon (Ian Anthony Dale) race to stop the dispersion points for the virus. Meanwhile, Leila (Sarah Roemer) fights for her life. But it all may be too late -- as the portal begins to open, sending tremors across the globe. Lisa Vidal also stars.