The atmosphere is pure teen CW, not gritty Supernatural. It’s no wonder Sam and Dean’s contribution to the episode is to ask what they missed when they show up too late to the scene of the crime. They don’t fit in this world, and neither do I. But then, I can’t believe I’m the target audience. The CW execs clearly wanted the Gossip Girl demo, with a slice of The Originals and a dash of Reign.
I imagine those execs had worried looks when they realized every drama they have but Supernatural is shedding viewers. At this point, they may be wishing they had chosen to grab some of Sam and Dean's supporting characters, not that there are many left, of course, and set them in Supernatural’s world, rather than dragging Sam and Dean into this ridiculous version of Chicago. The narrative did have its similarities to one Supernatural episode, but unfortunately, it’s Man’s Best Friends With Benefits, with its snazzy witch nightclub. Just no.
Perhaps the episode will catch on with a teen and twentysomething audience. But I don’t think “Bloodlines” has much to offer the core Supernatural viewers of any age.