Touched by the Gods: Part Two (S01E13)

Minos' health continues to fade as Pasiphae's scheming reaches its zenith. She sentences Ariadne to a gruesome execution not even the worst of enemies would deserve. Now that the court's loyalty is with the queen, Jason is Ariadne's last hope. He will need all the help he can get if he and his friends are to save her life. Fortunately, there are a few in Atlantis who remain loyal to the king... As the series reaches a thrilling climax, the battle lines are drawn in Atlantis once and for all. But just as the odds seem stacked against Jason, a shocking revelation is made that exposes the past and changes the course of the future forever. (BBC)