Digital Spy Teasers Merlin 4x12 

1. First off, the title is a little misleading - there's no sign of the eponymous sword this week!

2. "I'm hardly going to look kingly in my undergarments, am I?"

3. The King begins to wonder just why he's so unpopular.

4. "It seems your worst fears have been realised, Merlin."

5. There's more than one reunion on the cards!

6. "No-one likes to be called fat."

7. Arthur is a tree-hugger.

8. "We're too quick and too smart for the half-wit king in Camelot."

9. Don't mess with Gwaine - especially when he's tired and hungry.

10. "Sorry Merlin - some of these things are a little on the tight side!"

Uh oh...poor Arthur...