Now in hiding, Peter and Rose grow closer and investigate a potential bombing suspect. At the White House, the conspirators obtain a disturbing tape.

Peter visits someone close to Hawkins. Rose makes a key connection. Maddie’s night out takes a dangerous turn, spurring the Secret Service into action.

With assassins hot on their trail, Peter and Rose split up en route to the White House. A shocking discovery quickly puts their lives in jeopardy.

Peter teams up with Rose for a risky mission at the White House. Elsewhere, a notable agent joins the security detail for the vice president’s daughter.

Rose and Peter seek out one of the Campbells’ recent contacts and uncover new intel. Monks opens up to Chelsea. Paulo makes a move on Maddie.

In 2003, an Indonesian scientist makes a devastating discovery. In 2023, now outside of the quarantine zone, Joel and Tess clash over Ellie’s fate as they navigate a long-abandoned Boston…