Professor Robert Langdon, a man of youthful intellect, finds himself embroiled in a perplexing enigma when his mentor is abducted.

Struggling with the latest riddle, Robert and Katherine sought assistance from a friend of long standing.

Hunted by the CIA, Robert and Katherine seek refuge with Nuñez, while Sato subjects Bellamy to questioning.

Separated by circumstance, Langdon pursued the next indication, while Katherine sought out her father in the company of Sato.

Langdon must find Katherine and join forces with Sato, while Nuñez pursues a feeling in his gut.

Mal'akh exerted considerable pressure on Langdon and Peter, urging them to unravel the cryptic clues. Meanwhile, Katherine, Nuñez, and Sato worked to re-establish their cohesion.

Mal'akh illuminates the closing chapters of Zach's incarceration. Meanwhile, Langdon and Katherine confront the shadows of their history together.

Katherine and Langdon urged Isabel to prioritize her own safety. Meanwhile, Peter re-established contact with individuals connected to Leviathan.

Langdon, Katherine, Nuñez, and Peter joined forces with Sato and the CIA to orchestrate an ambush for Mal'akh.

With Mal'akh’s scheme reaching its critical point, Peter and Langdon grapple with the necessary sacrifice to ensure Katherine’s survival.