Supernatural: Are You There, God? It's Me, Dean Winchester

Hunters across America are being targeted by the vengeful spirits of people they couldn't save. When they come for Bobby and the Winchesters, we are treated to return visits from Meg (Nicki Aycox), FBI Agent Henrickson (Charles Malik Whitfield) and Ronald Reznick (Chris Gauthier) in this very continuity-heavy story.

Written by one of the show's most popular writers, Sera Gamble, Are You There, God? It's Me, Dean Winchester pretty much assumes that by now its audience is well-versed in the lore and backstory of Supernatural and this isn't going to be someone's first episode!

It's great, particularly, to see Meg Masters again after several years, especially as here she is the girl she was before she was demonically possessed and is able to relay to Sam and Dean some of her torment as a victim of a demon takeover and the aftermath of that horrific experience.

For the most part, after a bit of legwork and some gruesome, barely glimpsed shots of hunters with their hearts ripped out, this story is set in and around Bobby's house as our heroes are besieged by the ghosts.

Bobby discovers that the spirits have been forced to rise by a spell, but later it is revealed that this "Rising Of The Witnesses", as it is known, signifies the breaking of the first of 66 Seals which will ultimately lead to a Book Of Revelation-style Apocalypse and the unleashing of Lucifer onto Earth.

Although Dean staunchly disputes his divine status, Castiel (Misha Collins) is still quite adamant that he is a "soldier of God" (even if Dean can't accept the existence of The Man Upstairs... for very sound reasons) and that the demon Lilith is the one doing the seal breaking.

We're only two episodes in to this season and sides are already being drawn up for the ultimate rumble.