The epic fifth series of fantasy drama Merlin concludes on BBC One on Christmas eve and, as the great battle rages on Camlann’s mighty plain, Merlin faces his moment of destiny. Can he find the strength to save the man he made a King; the Camelot they fought to build; and the brotherhood they shared?

‘The Diamond of the Day (Part Two)’ airs at 8.15pm on Monday 24 December on BBC One. To whet your appetite, here are ten hints for the episode…

» Watch for the skies!

» Who will become Gaius’ new assistant?

» ‘I have one last favour to ask.’

» An unlikely character will wield a sword.

» One last message will be despatched by Raven Post.

» The shape of a dragon will herald a change.

» A life will be taken wordlessly.

» More than one old friend will lend a hand at the last.

» Who will make a vow by a rockery?

» ‘Someone truly remarkable.’

> Order the complete Series 5 DVD boxset on Amazon.

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