they can escalate. >> the key's going to look like this. it's going to be pretty much just etched out of the toothbrush. >> okay. >> but we've got to hit them quick because if not he'll swallow it. >> the fourth avenue jail's intelligence division suspects one of its maximum security inmates of having a homemade handcuff key. >> do the cells in 4 bravo 200, do they have the back windows into the water wells? >> they do. >> we're going to be monkeying around in the water well if you call me in the briefing room and i don't answer right away, give me a couple minutes to get back here. >> sergeant nicholas heads the special response team that will attempt to retrieve the key. but to prevent the inmate from swallowing it, they must catch him by surprise. >> let's go to the water well. it's basically a plumber's access, you know, the toilets are mounted against the wall, the sink's mounted against the wall. we don't necessarily go in the cell to fix these. we just go to the back walkway, full of plumbing.