Crossover; Merlin/Doctor Who
In which Merlin reveals his magic, Uther finds out, and Arthur helps him escape with The Doctor, telling him only to return when he is king.
"Arthur, I can’t just leave you."
"Go, Merlin, for me. You’ll find me in the future."
"But, it could be years for you and only minutes for me."
"I’d wait a lifetime for you."