The young wizard Merlin must keep his talent hidden in a kingdom where magic is banned as he and the future King Arthur face their destinies.
S01:E01 - The Dragon's Call
Merlin arrives in Camelot, where he meets Gaius and Arthur.
S01:E02 - Valiant
A knight (Will Mellor) with a shield of magical snakes enters the annual sword-fighting tournament.
S01:E03 - The Mark of Nimueh
The witch Nimueh causes a monster to poison Camelot's water.
S01:E04 - The Poisoned Chalice
Evil sorceress Nimueh returns and tricks Merlin into drinking from a poisoned chalice.
S01:E05 - Lancelot
Lancelot tells Merlin about his dream of becoming a knight of Camelot.
S01:E06 - A Remedy to Cure All Ills
Enchanted flowers make Morgana ill and Gaius is unable to find a cure.
S01:E07 - The Gates of Avalon
Morgana worries when Arthur becomes smitten with a girl.
S01:E08 - The Beginning of the End
Merlin is forced to choose between saving a young Druid's life and protecting Arthur.
S01:E09 - Excalibur
A mysterious black knight crashes Arthur's coming-of-age ceremony.
S01:E10 - The Moment of Truth
Merlin's mother, Hunith, arrives in Camelot, desperate for help.
S01:E11 - The Labyrinth of Gedref
When Arthur kills a unicorn, Camelot's crops die and the water turns to sand.
S01:E12 - To Kill the King
Gwen's father helps a renegade sorcerer turn lead into gold with a magic stone.
S01:E13 - Le Morte D'Arthur
During a hunting trip, Arthur and his men encounter a huge monster.