Tonight, President Martinez and Blake Sterling fulfill their agreement with Thomas, but after their plan goes awry, they suspect that there is a possible mole in their midst.
Elsewhere, Sean Walker digs for answers at Leila’s home, where he encounters Madeline (guest star Paula Malcomson), a mysterious conspiracy theorist.
Also, Simon’s past is illuminated, and his allegiances are tested.
Anyone who watched 24, where several of The Event's producers and writers came from, knows that if there can be a mole, there WILL be a mole. There's always a mole.