'Merlin': Series finale teasers

The biggest tragedy about Merlin coming to an end? No more ten teasers! Hope you've enjoyed our ten cryptic hints each week that the BBC's hit fantasy drama has been on the air - but this is the last ever batch!

We know, it's emotional - but dry those tears just long enough to read our clues about what to expect from 'The Diamond of the Day (Part 2)'. The Merlin team have delivered a series finale that's both intimate and epic; the show climaxes on an emotional high, that we can promise!

The final episode of Merlin airs on Christmas Eve at 8.15pm on BBC One.

> 'Merlin': The final ever episode in pictures
> 'Merlin': New episode 'Diamond of the Day (Part 1)' review

1. "How can one man be as strong as an army?"

2. There's plenty of epic action - dragons, swordplay and the like - but the chief focus of this finale is Merlin and Arthur's friendship.

3. "There are those that say he's the greatest sorcerer ever to walk the Earth."

4. There's a brief but touching reference to Arthur and Merlin's first meeting.

5. "You have won the battle, but you've lost the war."

6. Merlin (Colin Morgan) can't break old habits.

7. "We will have our revenge."

8. Get those hankies at the ready - you'll cry tears of sadness and tears of joy before this episode wraps.

9. "I have one last favour to ask..."

10. The final scene - we certainly weren't expecting that!