User blog comment:Broman178/Merlin's ability to sense magical objects./@comment-5139779-20120812041311/@comment-4135736-20120812111739

I agree, Series 4 was a big disappointment (though not as bad as Series 2 in my opinion), due to the plotholes, silly smirking Uncle Agravaine "Agravating" Evil, bad episodes like The Wicked Day, Lamia and Lancelot du Lac and the fact that Merlin's special ability to sense magical objects is never explained much is another factor. If I get time I will swap Series 1 and 4 in my profile because I added Series 4 as my second favourite season, well now I've changed my mind.