The show, which stars Richard Wilson and newcomer Colin Morgan in the title role, has been given a 7.30pm slot on Saturday night.
Airing straight after the first real episode of Strictly Come Dancing, it's in a primetime slot that's perfect for reaching a family audience.
The problem? It's directly up against The X Factor. Lest we forget, the ITV1 reality show has been romping home with over 9 million viewers every week this series. But what does this mean for Merlin's fortunes? Is the drama dead in the water already?
Which show will you be watching? Add your comments to this entry below!