Merlin's Mystery Competition

To celebrate the release of the Merlin Series 4 Boxset and Blu-Ray, the Merlin team/Shine TV Limited set up a Merlin Mystery competition.

To be in the chance of winning one of over 20 Merlin prizes, a contestant has to simply enter their email address into the form on: merlinmysterycomp.blogspot.com.

Through the official Merlin Facebook page, clues as to what the prizes may be are revealed over the coming days.

Clues

 * The first clue appears to be a sign boxed set.