Series Finale: As the Dome in Chester’s Mill comes down, the Resistance makes a final attempt to protect the outside world from the infected townspeople in the Kinship and their…

Barbie investigates Ben’s claim that something strange is going on in Chester’s Mill, but Eva surprises him with unexpected news. Meanwhile, Norrie and Hunter grow closer, and Christine advises Joe…

The residents of Chester’s Mill try to move on with their lives in the aftermath of their mysterious experience in the tunnels beneath town. Meanwhile, Big Jim suspects new residents…

Under the guise of helping Chester’s Mill rebuild, Christine urges the townspeople towards specific individuals and projects that remind them of their experience in the tunnels. Also, Julia and Big…

A year after the dome disappears, Barbie, Joe, and the other townspeople gather for a memorial. A year earlier, Julia and Junior try to rescue Barbie and the others, but…

Rebecca and Big Jim consider extreme measures as the conditions worsen in Chester’s Mill; clues about Melanie’s connection to the dome are revealed.

Barbie’s life is in Big Jim’s hands; the dome becomes magnetized; Julia tries to save the life of a mysterious girl who may have clues about the origin of the…

Big Jim finally learns what happened to his wife, Pauline; Chester’s Mill faces a new threat — climate change.

Rebecca and Sam try to save Chester’s Mill residents as temperatures plunge; Barbie puts his life at risk to help Julia after a terrible accident.

The latest threat intensifies, leaving Chester’s Mill residents at risk of being crushed to death; Melanie’s health declines as the egg’s fate remains uncertain.

Just as the walls start to close in on those trapped in Chester’s Mill, a possible exit from the dome is revealed.

When Rebecca discovers an infestation of butterfly eggs on the crops, Barbie risks his life to help her save the town’s food supply.

Big Jim conducts a census to see how long the town can survive on dwindling resources; acid rain threatens everyone.

After Big Jim and Rebecca’s plan left the town divided, Julia takes over as the leader of Chester’s Mill; Norrie and Joe help Melanie find more clues.

A cave-in severs Barbie and Sam’s path back to Chester’s Mill during their investigation of a mysterious tunnel; a dust storm rages through the town, as Big Jim and Julia…

As Barbie descends further into the mysterious tunnel in hope of finding Sam, he comes across a world filled with unanswered questions.

Barbie turns to his father for help contacting Julia but realizes that he may not be trustworthy; Big Jim declares himself sheriff of Chester’s Mill.

Barbie is apprehended by mysterious men and relentlessly interrogated about the Dome; Big Jim forms a deal that could permanently seal the fate of the Chester’s Mill residents.

Leo and Sophia struggle to control the mysterious device they’ve built. Back in Florence, Riario awaits judgment while Lorenzo and Vanessa take their partnership to the next level.

Leonardo and his allies are forced to retreat when the Ottoman Empire storms the city of Otranto.

A paranoid Leonardo becomes shut off from his friends, while an endangered Lucrezia searches for a way to make amends for past sins.

Leo devises an escape from Otranto but may not be able to save those closest to him.

Leonardo investigates a horrific murder that may result in the Labyrinth being exposed.

Leo must put his faith in his friends and in himself to have a chance to defeat the Turks.

Carlo’s attempt to program Leonardo into becoming “one” with the Labyrinth leads him to slip into an alternate reality that could prove life-threatening.

Nico and Zoroastre turn to an old enemy to gain support for the Crusade. Leo is ambushed by the Labyrinth.

A former nemesis returns to Florence and stands in opposition to Crusade efforts. Vanessa and Nico ponder their futures; Leo attempts to decipher the Turkish armor.

The Monster of Italy is captured but not all is safe as danger still lurks and poses a threat to the upcoming Crusade Festival.

Leonardo continues his search for the Book of Leaves; Lorenzo is forced to make sacrifices when Pope Sixtus takes aggressive measures against Florence; Lucrezia looks for new alliances in Rome.

The Pazzis make their move; Leonardo gambles for the future of Florence; Riario makes progress in his quest for the Book of Leaves.

Leonardo uses his intellect to save Florence as Pope Sixtus brings powers together; Nico tries to resist Riario’s temptations.

Leonardo makes an unexpected discovery in the New World. Lorenzo attempts to save Florence with the help of an old flame. Clarice struggles to retain control of the Medici Bank.

Leonardo and his allies face deadly threats as they search for the Book of Leaves; Carlo helps Clarice; the Sultan’s son is intrigued by Lucrezia.

An unlikely alliance is needed to save Italy from an Ottoman attack; Riario faces danger; Nico takes control of Vanessa’s destiny.

Leonardo returns to learn that Duke Federico has been ruling Florence with an iron fist; a sinful Riario seeks redemption; King Ferrante negotiates with Lorenzo.

Leonardo and Riario face death; Zoroaster and Nico plan an escape; Lorenzo waits to meet with the king of Naples; Bayezid seeks diplomacy in Rome.

Entering the Vault of Heaven presents challenges for Leonardo and Riario; Lorenzo becomes a part of King Ferrante’s bloody games; Lucrezia meets the Turk in Constantinople.

Leonardo attempts to navigate the Atlantic without maps; Lucrezia is smuggled into the Vatican for an important meeting; Lorenzo’s identity is discovered during his trip to Naples.

Riario engages the Pope and a mysterious prisoner in a discussion concerning the count’s defeat, while Leonardo searches for a rational explanation when an outbreak of demonic possession occurs at…

Leonardo continues his quest for the Book of Leaves. The Pope’s nephew arrives and meets his spy. Leonardo’s war designs fail, causing a rift with the Medicis. The Pope learns…