Melencolia I

S1 E5: Langdon uses an inscription on the stone box that enclosed the capstone to lead the team to an engraving at the National Art Gallery, but is still unable to find a map to the portal. Mal'akh sends Langdon video evidence that Peter is still alive, which provides further validation for Katherine. At Sato's urging the team decides to set up a secret fake drop to get Peter back, but the CIA ruins their strategy, leading to Langdon's abduction by Mal'akh. Meanwhile Nuñez finds himself in the clutches of the Janitor's wife Mina, who is revealed to also be a follower of Mal'akh.