Season 2
The second series of Merlin finds Camelot more vulnerable than ever to the dark forces of magic, forcing Merlin to make difficult decisions in order to protect Arthur, ensure the future king's survival and prevent the mythic kingdom from being destroyed.
Episodes
1 The Curse of Cornelius Sigan Sep 19, 2009 
2 The Once and Future Queen Sep 26, 2009 
3 The Nightmare Begins Oct 3, 2009 
4 Lancelot and Guinevere Oct 10, 2009 
5 Beauty and the Beast (1) Oct 24, 2009 
6 Beauty and the Beast (2) Oct 31, 2009 
7 The Witchfinder Nov 7, 2009 
8 The Sins of the Father Nov 14, 2009 
9 The Lady of the Lake Nov 21, 2009 
10 Sweet Dreams Nov 28, 2009 
11 The Witch's Quickening Dec 5, 2009 
12 The Fires of Idirsholas (1) Dec 12, 2009 
13 The Last Dragonlord (2) Dec 19, 2009