With Arthur's forces outnumbered, Merlin arrives in his guise as the aged sorcerer to defeat Morgana's army with magic. Arthur kills Mordred but is wounded and rescued by ...

Merlin finds himself facing the future he's fought so long to avoid. ...

Merlin sees Mordred helping Kara, a wounded Druid with whom he was once in love, but agrees to keep it secret. Later Kara tries to kill Arthur and is sentenced to death, ...

Merlin relays his suspicions to Arthur and they shadow Guinevere as she goes to meet Morgana. Merlin learns from ancient priestess the Dochraid that the spell on the quee ...

Earnest young druid Daegal begs Merlin to come to his village and save his dying sister, but the boy leads him into a trap where he's left to die by Morgana. Arthur meanw ...

After Arthur is unseated from his horse, his saddle is shown to have been tampered with and stable groom Tyr Seward blamed. Imprisoned, he tells Merlin he saw the true cu ...

After visiting her father's grave, Guinevere is captured by Morgana and imprisoned in the infamous Dark Tower haunted by ghostly visions and screams. Merlin and Arthur le ...

The druid Osgar delivers the judgment of the disir to Arthur. ...

Arthur has been king for three years without incident, but now an expedition north to the land of Ismere, led by Gwaine and Percival, is captured by Morgana and fellow so ...

As Morgana's forces capture Camelot, Arthur at last comes to see his uncle's treachery. He is reluctant to flee, but Merlin bewitches him into escaping with him, temporar ...

As Arthur celebrates his engagement to Princess Mithian to unite their countries, the banished Guinevere witnesses a raid on her village by warlord Helios and afterwards ...

The knights come across a shrine built on a site where Druids were massacred, and where a thirsty Elyan inadvertently desecrates it by drinking from its well. As a result ...

When the menfolk of Guinevere's home village fall victim to a mysterious illness, Gaius sends Merlin, along with Guinevere and the knights, to cure them, but they are sid ...

When Merlin falls into Morgana's hands, he becomes a deadly weapon in her fight for supremacy. Using ancient magic, she pits friend against friend to create the perfect a ...

Arthur faces his first true test as King when he incurs the wrath of the formidable Queen Annis. With the lives of thousands hanging in the balance, Arthur must find the ...

The mysterious Julius Borden arrives in Camelot with news of a magical secret that threatens to change the landscape of the kingdom forever. He has located the final part ...

The mighty citadel is buzzing in anticipation of the prince's birthday celebrations, but Arthur's old adversary, Odin, promises to ensure this is one party Camelot will n ...

The kingdom is on the brink of collapse, with Morgana poised to strike. As Lancelot races back to Camelot with the dying Merlin, Arthur must continue on his mission to va ...

Morgana takes the dying Morgause to the Isle of the Blessed where she unwittingly tears the veil to the spirit world, unleashing the Dorocha, invisible ghosts that begin ...

Rome brings its enemies inside its borders as the age of Empire begins ...

Flint launches a final, desperate attack to destroy England's hold on Nassau; Silver makes an irreversible decision; Rackham confronts Rogers; Nassau is forever changed. ...

Silver and his crew travel to Skeleton Island in pursuit of Flint; Madi is presented with a proposition; Rogers struggles to hear Eleanor; Billy commits himself to the gr ...

Flint and Silver's relationship threatens to collapse during a rescue mission; Max discovers the true cost of freedom; Rackham pursues his target. ...

Flint urges Silver to exercise more caution; Max shows Jack and Anne how to get upriver; Billy meets a survivor; Rogers discovers the truth. ...

The Spanish invade Nassau. Silver tries to hold the Underhill plantation, while Eleanor, Madi, and Flint hole up outside the fort. Woodes searches for Eleanor as he reali ...

Silver places Flint's survival in his own hands; Billy sows further dissonance; Eleanor jeopardizes everyone and everything to ensure her victory; Rogers orchestrates a s ...

The streets of Nassau become embroiled in violent strife; Silver demands answers from Billy; Eleanor tries to help Max; Bonny and Rackham suffer a traumatic experience. ...

Max runs afoul of the law. Rogers reckons with his past. Flint and Madi reach an understanding. Long John Silver makes his return. ...

Flint submits himself to Billy's authority; Eleanor tries to find a way to save Rogers; Silver is forced to become the leader of the war to reclaim Nassau. ...

Revenge is the new motivation to move against British rule in the town of Nassau. The new season opener, continues in the battle started in season 3 finale. Captain Flint ...

Hornigold and the British come for the pirates; Rackham and Bonny face impossible odds; Silver demands answers from Flint; Billy crowns a king. ...

Captain Flint prepares for the final battle, while Billy tries to save Captain Vane from being hanged; Max must decide who she can trust; Eleanor Guthrie finds herself in ...