Arthur left Merlin at the mercy of Morgan and her spells and potions and the wizard wakes up to find himself tied down to a sumptuous bed. If you're going to be held hostage, at least it should be in velvet and silk. I doubt Arthur would have been of much help anyway, as Merlin quickly Houdini's himself out of her clutches. Guinevere has a lovely wedding, by the way. But from the look of the scenes from next week's episode Arthur may not let something like a little marriage between friends deter him. It also looks like Morgan's magic may have some pretty bad side effects. You need to read the small print on that eye of newt, Morgan. Merlin and Morgan have good chemistry and an interesting rivalry and are the main reason to keep tuning in to Camelot.
"A sinister cabal of superior writers."