Catalina Denis

In the premiere episode, "X Marks the Spot," several kids have been talking about their imaginary friend, Drill. What the parents don't know is that this friend is not as imaginary as they think. And when the mysterious games Drill convinces them to play turn dangerous, FBI child specialist Claire Bennigan is called in to investigate.

While John Doe continues on his mysterious mission, Claire attempts to hold back his sketch from the other bureau offices while she investigates on her own whether he may truly be her husband Sean, who had supposedly perished in a plane crash. Lena is aware and not too pleased that Wes has been speaking with Claire about a case, and Drill continues playing his dangerous game with Minx, Henry and Harper.

John Doe holds Dr. Maria Benavidez hostage as an unknown entity continues to blindly lead him to an undisclosed location, and Claire and Wes further their investigation into John Doe's past whereabouts and begin to uncover what his next target is.

While Minx tries to persuade a disillusioned Henry to play one more game for Drill, the race is on for Claire and Wes to thwart John Doe from causing a major incident that could potentially kill millions of people.

Thinking they might actually be able to defeat this unseen foe, Wes convinces the President to let him round up all of the children in a protected zone in the hopes that Drill will weaken.