Check out Digital Spy's ten teasers for this week's Merlin below:

1. "I've been playing a dangerous game since the first time I set foot in Camelot."

2. The prince is not too happy with the "entertainment" at his birthday feast.

3. "I think that a lot of sorcerers are in the charcoal business."

4. The elderly Merlin returns and confronts Arthur once more!

5. "You've got *******, ******** and ******** to entertain you!"

6. At one point, Arthur forgets to put on his trousers.

7. "I take it u didn't come all this way just to smash my favourite pot!"

8. Arthur begins to suspect that there is something wrong with Merlin's bladder.

9. "Finally u will get all that u deserve, old friend."

10. Arthur gives Merlin a piggyback ride.