When a man is found dead on the side of the road, the death appears to have been caused by a heart attack, but the two cops don't think all is as it seems. Chris and Rita suspect that a couple is luring ""amateurs"" to their dungeon for ""sometimes lethal sex."" So Lance and Lorenzo go undercover as a couple of swingers looking to be chosen by the couple, to go to the dungeon. Meanwhile, an old enemy reminds Rita of her father and her youth.

A man winds up dead on the beach, so Chris goes to search the deceased's office. While there, Lorenzo finds a date book with the entry ""S.O.B."" and a roll of film. Chris and Rita go to the house belonging to some people in one of the undeveloped pictures. While there, they see the dead man's watch. The two cops decide to investigate a yacht called the "S.O.B.", where they gain more clues as to the murderer, the way he did it, and why.

A man is killed by a bale hook while trying to deliver a million-dollar ransom for his kidnapped daughter. When Chris and Rita investigate, they slowwly discover that there really was no kidnapping. Their main problem is that every time they find a new suspect, he winds up dead. Meanwhile, Chris tries to find time to make a pasta dinner for his new girlfriend Ursula.

Chris and Rita investigate the death of a young woman. Soon, they discover that her murder was part of a serial killing by a man who finds his victims in the singles ads. So Rita places an ad in order to try and catch the killer. Meanwhile, Chris reunites with an old lady friend, who has turned to stripping for her income.

When a congressman is found dead and naked by the sea, Chris and Rita are assigned to the case. Their first actions are to question the dead man's family, and to check the guest list from the man's party held the night of his murder. All the evidence seems to point to the dead man's son's girlfriend. Meanwhile, Chris helps Rita overcome her insomnia.

Lorenzo and Lance investigate the murder of a loathed publisher. Chris talks to the deceased's wife, who was about to tell her husband that she wanted a divorce because of his infidelity. The two sergeants also talk to the deceased's business partner who, after his partner's death, was got complete control over the company. The final suspect is the dead man's mistress Avery Benton. Meanwhile, Rita ""runs into"" a concert promoter named Tyler.

A woman is found dead in her pool by her next door neighbor. The evidence points to a mystery woman who could also have been the victim's lover. Meanwhile, Chris gets reunited with an old girlfriend, but what will he do when he finds out that she is the ""mystery woman""?

A young girl is found dead by a jogging schoolmate, but Chris and Rita think it is a ""silver platter homicide." Soon, the evidence shows that the girl was gang-raped. In order to stop the killers, Rita goes undercover as a college student.

A mob lawyer and his hairdresser are shot in the barber shop.