Legend of the Dark Knight: Ruin - S5-E4
Continuity mistake: When Ed is trying to take the Blackgate folder from Lucius, the way it's held between them changes between shots.
Legend of the Dark Knight: Pena Dura - S5-E5
Continuity mistake: When Gordon jumps onto the bench in the library, he grabs the 2nd shelf as he's falling backwards. In the next shot, he's holding the 3rd shelf.
Answer: "The Merc" was a warehouse like store with aisles that sold mainly weapons, machetes, AK-47s, C-4, barrels of acid, etc. In s02e05, "Scarification", it was shown being raided by GCPD.
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