Two maintenance men were discussing about recycling paper trash when one of them noticed a dead body among the garbage. Detectives realize the victim, a female psychologist who followed his dad footsteps at Princeton, watched the same night a movie at a local art-house cinema. She was together with a troubled black girl (Yaani King Mondschein) she was mentoring who dated a Cuban lowlife; the teenager was also involved with another black guy in a robbery scam for few dimes. Anyway the investigation takes another pattern when Briscoe and Green figure out files in the victim's laptop has been modified after the murder took place. A rapist inmate just paroled kept on downloading porn movies on the net and he became aware the therapist on charge (the murdered girl) had already known about that, so he decided to kill her. But how did he get that kind of information?
The episode plot involved mostly to what extent people can steal private information to sell them in the market. This topic was much debated when the episode was shooting (after the 11/9 attack) but it's still meaningful right now: privacy plays a crucial role to avoid dictatorial tendencies.