Merlin’s Colin Morgan has teased some details on Series 5 of the show.

“The action takes place a few years after Series 4. I can also confirm the return of Mordred, but he’ll now be played by an older actor named Alexander Vlahos,” Morgan explained in an interview with French magazine, ‘Séries Mag’. “Anyone familiar with Arthurian legend knows that Mordred plays a central role in the fall of Camelot. His presence is not a good omen for the kingdom…”

Morgan also hinted that Morgana may now have power over dragons making her a tougher foe than ever: “Dragons will be at the heart of the action, because Merlin and Morgana now derive their powers of these magical creatures. Their next battle should be epic. Morgana could outmaneuver him this time…”

Morgan also addressed the one we’ve all been waiting for – will Merlin finally reveal his secret to Arthur? “I think it’s time that Arthur learns the truth. But it will be a real test for both of them and it’s uncertain if their friendship will survive such a revelation,” he said.

“Arthur is so convinced that magic is evil and killed his father and his mother that he’ll struggle to remain objective. And Morgana and her scheming will also have an influence on Arthur’s opinion on the use of magic.”