India, Aug. 24 -- Reacher Season 4 is moving deeper into its central mystery, and Episode 5, titled "Bridge," is expected to push Jack Reacher closer to the truth behind the conspiracy he has been investigating.

The season began when Reacher, played by Alan Ritchson, became suspicious of a woman on a New York City subway train whom he believed could be a suicide bomber. What initially appeared to be an isolated threat soon opened the door to a much larger investigation involving the CIA and a network of people whose motives remain unclear.

With four episodes now setting up the mystery, Episode 5 arrives at a crucial point in the season as Reacher attempts to determine who is behind the operation and, perhaps more importantly, who he can...