Mad City: Follow the White Rabbit - S3-E6
Continuity mistake: Valerie Vale places her coffee cup on a napkin while having breakfast with Jim Gordon, but when she gets up to leave immediately after, the cup has moved off the napkin and onto the table.
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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