If you've been kept awake by the sound of something going bump in the night, you'll know that ghosts ... of all Britons ...

Supernatural Season 7 features a clever callback to Jensen Ackles' horror film, My Bloody Valentine, in a brilliant and subtle meta moment.

Supernatural entertained legions of fans with its mix of drama and action as Sam and Dean Winchester hunt monsters, ghosts, demons, and any other inhuman entity that goes bump in the night.