Let's get straight to the point: "Bloodlines" is the weakest episode in the entire Supernatural series and there is really no reason for it to exist. However, as a backdoor pilot for the spin-off Supernatural: Bloodlines, it does provide an interesting introduction to a world that is far removed from that of the Winchesters. In this week's backdoor pilot, written by Andrew Dabb, a mysterious man with silver claws goes on a killing spree in a monster bar and accidentally kills Ennis Ross' fiance as he tries to escape.

When Sam and Dean encounter Ennis, they share information, save some shape-shifters, and help create a new hunter. Meanwhile, a forbidden relationship between shape-shifter David and werewolf Violet is revealed and David must overcome his sister in order to find his place in the family.

Supernatural: Bloodlines can be seen as a lighter version of Supernatural and should be appreciated as such, if possible.

As Dean says, "What is this, The Godfather with fangs?" The tone of "Bloodlines" tries to achieve this, but falls short. The episode feels like a confusing mix of The Vampire Diaries and The Originals thrown into the world of Sam and Dean, without any proper justification or development.

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