Mad City: Better to Reign in Hell - S3-E1
Continuity mistake: While speaking with Lucius Fox, Bullock turns his head to the left twice.
Mad City: Better to Reign in Hell - S3-E1
Continuity mistake: When Gordon is talking to Bullock, Bullock raises his coffee cup to his mouth. The next shot when Gordon turns, Bullock's cup is lower and he raises it again.
Mad City: Anything for You - S3-E5
Continuity mistake: After the Red Hood gang breaks the head of the Penguin's statue, it falls and hits the floor, then it moves between shots.
Mad City: Anything for You - S3-E5
Continuity mistake: While the penguin is speaking to the crowd and the Red Hood gang is arriving there, the sun changes between shots.
Mad City: Anything for You - S3-E5
Continuity mistake: Edward Nygma's eyeglasses instantly disappear while riding in the convertible with Mayor Oswald Cobblepot.
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.
Mad City: Beware the Green-Eyed Monster - S3-E11
Continuity mistake: When Alfred pull the man out of the car, his behind is already wet before he hits the road. (00:11:47)
Heroes Rise: How the Riddler Got His Name - S3-E15
Continuity mistake: Edward Nygma rolls gas canisters down the aisle at the Gotham Police Academy speech, the canisters land on their sides, then suddenly they are standing upright, spewing gas.
Heroes Rise: The Primal Riddle - S3-E17
Continuity mistake: Harvey Bullock removes his reading glasses twice while looking at Frank Gordon's crime photos.
Heroes Rise: All Will Be Judged - S3-E19
Continuity mistake: Gordon's pistol switches between shots from higher to lower and higher again.
Heroes Rise: All Will Be Judged - S3-E19
Continuity mistake: The crowbar held by the Riddler instantly changes position from higher to lower and back again.
Heroes Rise: Destiny Calling - S3-E21
Continuity mistake: As Bullock and Gordon face Fish Mooney in the tunnel, just as Fish says "Uh, no'", there is an angle change and Gordon suddenly goes from holding his gun in a high, two-handed grip, to a low, one-handed grip. (00:13:15)
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.
Bishop73