CIA operative and protagonist. Sent on a mission, he spares a witness's daughter but is betrayed by his boss. Transferred to Suffolk, he defends a numbers station, uncovers a conspiracy to assassinate officials, fakes his and his ally's deaths to escape, and ultimately saves his partner from execution.
Grey was Emerson's direct commanding officer who ordered the initial hit.
Emerson and Katherine form a tactical alliance to stop the assassination plot.
Explore the full interactive character relationship map of The Numbers Station