The first four series of the original BBC Radio 4 fantastical drama series set in a world almost, but not quite, like our own.

Paul Hilton stars as William Palmer, the immortal, reluctant and unthanked hero protecting mankind from an enemy they resist believing in: the Grey Folk.

Thrilling, dark and contemporary, the dramas are set in a recognisable present day but one haunted by the folktales of the British Isles: drowned villages, changeling children, werewolves and unruly nature spirits.