When Arthur kills a unicorn, Merlin knows that terrible consequences lie in store for Camelot and its people.

And things are set to get worse. After a hunting trip in the forest, Arthur is fatally attacked by a savage beast. As the Crown Prince lies dying, Gauis knows that dark magic is at work and Merlin is the only one who can save him - but at what cost . . .

With a graphic novel element to really bring the text to life, each book covers two TV episodes.