In the next episode of fantasy drama Merlin‘s fourth series, Morgana joins forces with enigmatic wizard Alator to uncover a secret that could change the course of destiny.

With allies on both sides of the castle walls, can anyone stop her before Merlin’s greatest secret is revealed?

The Secret Sharer airs at 8.20pm on Saturday 12th November on BBC One. In the meantime, here are some teasing lines of dialogue from the episode…

» ‘He knows all our plans, all our secrets. He knows everything!’

» ‘Do you agree that magic should be banned? Yes or no?’

» ‘I know it’s hard.’

» ‘It’s time to wake up. It’s time for the fun to begin.’

» ‘I’m not afraid to die.’

» ‘I want you to tell me where Emrys is.’

» ‘Let the flames search out your thoughts.’

» ‘I got bored of playing soldiers, thought I’d come and see how you were.’

» ‘Emrys is the name by which he is known to the Druids but to me, I know him by a different name…’

» ‘He’s just a serving boy, but he’s the most troublesome serving boy I have ever known.’

> Order the Series 4 Volume 1 DVD on Amazon.

Are you looking forward to the episode? Let us know below…