Dexter, still watching from his office, VO's that relationships are complicated. Letting Miguel kill Billy Fleeter will be a big gamble. And, Fleeter was a big gambler and look where it got him. Continuing with the gambling motif, Dexter and Miguel will be trailing Fleeter at a casino that evening. And, here we are at the casino. Miguel and Dexter are sitting at slot machines watching Billy Fleeter play poker from afar. Miguel asks Dex how he learned about that casino and he replies that it was research. Miguel thinks that they should get a little bit closer, but Dexter explains that this night is only for watching. They will learn his routine now and meet him later. They don't want him to notice them now though. Dexter says that the number one rule of the Code is to not get caught. This is the first that Miguel has heard of the Code and asks what he means. Dex VO's that he's not sure how much to tell Miguel. If I were him, I'd stop just shy of letting him know that my dad trained me to be an efficient killing machine. He says that the Code is just a series of precautions dictated mostly by common sense. They're walking away from the slot machines now. Miguel says that the Code seems a little more complicated than common sense and Dex says that his dad was a cop. "He taught you?" asks Miguel. Dexter explains that he knows what cops look for in an investigation -- so he's essentially working backwards from the crime. Also, Dexter spends all day looking at other people's mistakes at a crime scene.

Dexter looks at an old man, who morphs into a vision of Harry. He's pissed. He asks Dexter if he forgot the part where he told Dexter to go teach the Code to other people. Nothing pisses me off like a sarcastic ghost. Dexter pops out of his reverie. I don't recall him seeing Harry in other people before. Usually, he just pops out of the woodwork. Hmm, changes.

The next day, at the station, Deb is walking down the hall and talking to Quinn. She asks him what he busted Anton for, before he was a CI. Pot, he "thinks." Deb's relieved -- it couldn't have been anything too serious or he wouldn't have made him a CI. "I guess," he replies. Deb congratulates him for being full of answers today. He says that he busted guys like Anton all of the time, but it's all written down somewhere. Deb says that yes, there are the CI files. Quinn looks nervous. She goes to her desk and calls Anton. "Hey Lazy, Hope I'm waking you up." He says that he hasn't even been to bed yet. She tells him that she needs his CI number, for a status report. He doesn't know what she's talking about and she clarifies -- it's his assigned Confidential Informant number. She says that the number should be on his paychecks. He says that he doesn't get checks -- Quinn pays him under the table. Oh my. Deb looks at Quinn and calmly tells Anton that she will get the number from him.