"And yet later Arthur completely forgets that the Dolma is supposed to have taken Merlin hostage! It’s bizarre that one minute Arthur would be prepared to literally leap off a cliff in search of his fallen friend, but half an hour later doesn’t even notice he’s not there. The showrunners are obviously playing it for laughs at this point, but it just comes across as random and unnecessary"
— SFX review for Merlin. 5.09. “With All My Heart”