The BBC have released a trailer for the two-part finale of Merlin's third series, which begins this Saturday on BBC1/HD @7.45PM. It looks fantastic. In fact, it explains why most of series 3's middle has felt visually flat and unimaginative, as the budget appears to have been spent on the two-part bookends this year. I hope they don't follow that model next year, or accept their standalone episodes are uninspiring and give us a heavily serialized six-part run. It's an idea that might keep the show more focused and save the BBC some money. Anyway, I assume everyone agrees the trailer is exactly what they want this show to be most weeks?