Still getting nowhere on their hunt for Amara, the Winchesters take time out to investigate a haunting that has left a young child in a coma.
They quickly discover that Bobby Singer (Jim Beaver) and Rufus Turner (Steven Williams) had looked into a similar occurrence at the house, several years earlier.
Safe House then unfolds in parallel timelines, jumping between Sam and Dean's case and Bobby and Rufus's.
As we have seen previously in this season, this is an old school-style of investigation given a fresh twist, with the parallel timelines nicely factoring into the story.
It's always interesting to see the Winchesters come up against a creature that can't be beaten by brute force, and this is where the traditional research and lore of the show truly shines.
Also, as fun as it was to see the older hunters at work again, Safe House inevitably felt a bit like a filler episode, coming this late in the season.
Sure, there were mentions of the season arc, and the story's antagonist made a subtle reference to the bond between between Dean and Amara, but, despite the innovative nature of the monster at work here and the clever storytelling techniques, Safe House didn't really deliver the goods.