A kidnapping victim's startling statement clues Andy and John in on a serial sadist keeping women locked in a dungeon somewhere in New York. Meanwhile, a routine robbery investigation takes a saucy turn for Medavoy after he makes an unlikely connection with the 60-year-old victim.
Andy's off-duty and slightly underhanded work to prove that Hatcher killed his own wife lands him a transfer out of the 15th precinct and into the Bellevue Morgue engineered by Detective Hatcher. Meanwhile, the squad is up to their whips and chains after a dominatrix is found murdered.
Haywood reopens an 18-year-old case that has Andy reliving a major mistake in his career. Meanwhile, Sipowicz and Clark investigate the death of a man whose brother was pursued by a bounty hunter. Elsewhere, Ortiz gets a new partner, Detective Kelly Ronson, who ends up lending an unusual hand during the hunt for the child an ex-con had to give up before going to prison.
A man's gunshot-induced amnesia causes Jones and Medavoy to concoct an unconventional way to nail his assailant. Meanwhile, a man Sipowicz put away twenty years ago for raping and murdering a 12-year-old girl goes free after DNA testing exonerates him, and Ortiz and Ronson bust a gruesome underground network pre-teen prostitution ring.
Teacher David Lewis comes into the squad-room to talk about Cindy Clifton and a support group that he ran that she was a part of. Sipowicz and Clark let him go but send off some of his left behind chewing gum to DNA for testing. Jones goes to court as its the day when Michael is to testify against his father. Ortiz and Ronson go to the scene where tourist Ned Applebaum has been mugged and lost his wife's $35,000 necklace. Ortiz and Ronson eventually find out that Ned met a lady friend on the Internet and he was going to meet her in Little Italy when he was mugged. He ...