In the Season 1 finale, the world waits to see if the flash-forward visions come true. Mark, meanwhile, learns the date of the next blackout while Simon and Demetri attempt to stop it

Mark continues his interrogation of Hellinger; Lloyd finds something that could help him solve the complex equation from his flashforward; Tracy fights for her life.

ark does everything in his power to protect Gabriel; Aaron risks his life in an attempt to rescue his daughter; Janis must kill a fellow agent

Demetri and Banks try to track down a killer; Mark reluctantly agrees to help Simon find his sister; the FBI discovers the identity of Suspect Zero.

Olivia receives disturbing news from Gabriel (James Callis); Aaron’s life is in danger as he continues to search for his daughter in Afghanistan.

Mark and his team search for Demetri; terror suspect Alda promises to give Zoey information on Demetri’s whereabouts; Olivia learns the identity of who sent her the text message about Mark’s flashforward.