Did the brothers find all of the pieces to enter the rift?
That was the big question on Supernatural Season 13 Episode 17 when they continued to try and garner all the pieces to open the rift and save their family.
Meanwhile, a Men of Letters bunker from the 1920s proved to be one of the best hiding places for some of the pieces.
But what new mystery awaited the brothers as they investigated?
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Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.