Sci-Fi Bulletin have posted a small review for this weeks episode here on their site. Spoilers included in the article.

The BBC Merlin site has uploaded a clip from Saturdays episode here.

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Merlin
♦ Radio Time's url of Episode 4.06 names the episode title as "A Servant of Two Masters," although it is not listed on the page itself yet.
♦ The BBC Merlin homepage now has a 4.05 promo photo as a background, and an upcoming guest star has been given a Villains character page
♦ scriptline has a transcript of 4.02 at this link
♦ Colin is featured on the ( Read more... )

Digital Spy has posted 10 teasers for 4.05:

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magog_83 has scans of Episode 4.05 ('His Father's Son) synopses in Radio Times and What's On TV containing some more detail than previous ones (and spoilers of course) at her journal here.

Via What's on TV

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Via Randomthingscopy

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Colin talks about series 4 and his other projects to the Daily Record:

“It would be great to work with my own accent. I can’t believe I’m in an Irish movie and can’t even use it.

“But my day will come. And I just see it as a another string to my bow.”
Read the rest of the article interview here.