low room filled with round

They began by offering a quick tour, which Ray declined. He'd seen enough casino floors in the past month to last him forever. "How much of the upstairs is off-limits?" he asked. "Well, let's see," Piccolo said politely, and they led him away from the slots and tables to a hallway behind the cashiers' booths. Up the stairs and down another hallway, and they stopped in a narrow room with a long wall of one-way mirrors. Through it, there was a large, low room filled with round tables covered with closed-circuit monitors. Dozens of men and women were glued to the screens, seemingly afraid to miss anything. "This is the eye-in-the-sky," Piccolo was saying. "Those guys on the left are watching the blackjack tables. In the center, craps and roulette, to the right, slots and poker." "And what are they watching?" "Everything. Absolutely everything." "Give me the list." "Every player. We watch the big hitters, the pros, the card counters, the crooks. Take blackjack. Those guys over there can watch ten hands and tell if a player is counting cards. That man in the gray jacket studies faces, looking for the serious players. They jounce around, here today, Vegas tomorrow, then they'll lay low for i week and surface in Atlantic City or the Bahamas. If they cheat or count cards, he'll spot them when they sit down." Piccolo was doing the talking. Barker was watching Ray as if he might be a potential cheater. "How close is the camera view?" Ray asked. "Close enough to read the serial number of any bill. We caught a cheater last month because we recognized a diamond ring he'd worn before." "Can I go in there?" "Sorry" "What about the craps tables?" "The same. It's a bigger problem because the game is faster and more complicated." "Are there professional cheaters at craps?"