Continuity mistake: At the end of the episode Fish is standing at a puddle, with three long puddles striped in front of her. After Falcon sits down with her, the camera pans back again showing where she was standing. All 4 puddles have suddenly evaporated and the additional puddles further ahead are almost gone. (00:41:05 - 00:42:10)
Continuity mistake: When Bruce follows Cat to the roof top he jumps after her. He runs and steps onto the ledge with his left foot. When the camera angle switches it shows Bruce jumping off his right foot instead. (00:18:10)
The Fearsome Dr. Crane - S1-E14
Continuity mistake: When Nygma examines the corpse, he pushes his right hand deep into the body. When he is caught, he holds both hands up in the air. The glove on his right hand is completely clean, when it should be covered in blood and gore.
Continuity mistake: When Dr. Thompkins is first introduced to Bullock, he reaches backward over his head to shake her hand. The shot changes and he is suddenly reaching around his body instead.
All Happy Families Are Alike - S1-E22
Continuity mistake: When Moroni arrives to kill Falconi, the number of turns of rope around the hook holding Falconi changes. First it is just one loop from the front, then the shot changes to the back and it is two. The shot changes to the front again and now there are three loops of rope around the hook.
Continuity mistake: When Jerome get stabbed in the neck, in the first shot the blood comes from his mouth and goes towards his eye. In the next shot, there's no blood trail going to the eyes, but instead to his cheeks. (00:34:50)
Mommy's Little Monster - S2-E7
Continuity mistake: Miss Kringle's head is canted up and to the right as she lays on the gurney in the morgue refrigerator, but when Edward Nygma pulls her out, her head is facing straight up. Subsequent shots of her in the refrigerator her head is canted up and to the right.
Continuity mistake: When Alfred leaves the garbage dump and tries to commandeer the car, the driver's are already wet from a previous take before Alfred throws him on the wet road.
Continuity mistake: When Alfred walks into the cabin, gun drawn, his right hand is already bloody, despite the wounding happening 5 seconds later.
Continuity mistake: While Alfred consoles Bruce over the death of Karen, Bruce's head immediately changes position depending on the angle of the shot.
Continuity mistake: During Barbara and The Lady's meeting in the club, The Lady's glass is on the table. The next shot The Lady is holding her glass off the table.
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.
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