Ep 6. The Dark Tower

Merlin season 5 episode 6 titled "The Dark Tower", follows the adventure of Merlin and Arthur as they journey to a far-off kingdom to investigate why the magical powers in Camelot are suddenly starting to dwindle. In this episode, a disheartened and worn-out Elyan has lost faith in magic and has been sending attackers after the Camelot convoys. When they arrive at the supposed source of the problem, Arthur and Merlin are met with a mysterious tower that seems to stretch infinitely into the sky. The wizardry duo soon realize that this tower is not just any old fortification but is, in fact, a magical structure created and maintained by Morgana for her malevolent purposes. What follows is a riveting tale of courage, determination, and the power of friendship.

As the knights of Camelot make their way through a forest, they are suddenly beset by Elyan and his men. Arthur and his knights manage to fend off the attackers but soon realize that they are wearing themselves out fighting off divestment after divestment of knights. Eventually, they arrive at a strange, ethereal tower that seems shrouded in dark secrets and ominous portents. Arthur and Merlin must find a way to penetrate the magical barrier surrounding the tower and defeat Morgana before she can do any more damage.

As Arthur and Merlin explore the tower, they encounter a host of magical creatures and illusions, some of which are quite unsettling. Nevertheless, they persevere and eventually encounter Morgana in the tower's depths. She reveals that she is the reason behind the dwindling of magical powers in Camelot and attempts to use the power of the tower against Arthur. However, with Merlin's assistance, Arthur and the knights manage to shut down the tower, dispelling Morgana's dark magic and saving Camelot from certain doom.

Overall, "The Dark Tower" is an exciting adventure that is full of action, magic, and more than a little danger. The episode is a thrilling addition to the Merlin story, and it keeps viewers on the edge of their seats right up to the final moments. With excellent performances from the entire cast, including Bradley James and Colin Morgan as Arthur and Merlin respectively, "The Dark Tower" is a must-see for Merlin fans and fantasy enthusiasts alike.