T.C., now hooked on painkillers from being shot in the leg, leads Pacific Blue on the trail of a potential serial killer who preys on young runaways that he locates via the Internet. Cory and Monica convince a woman psychic, who used to help the police back East, into helping on the case.

The opening of the Scarlet Rose ballroom, scene of Santa Monica's most notorious murder of the late 40's, piques Bobby's interest when he runs across a young woman at the club who bears a striking resemblance to the Scarlet Rose herself. Amid the background of swing dancing, Bobby discovers this woman is the granddaughter of the slain actress. She's returned to solve the mystery, which involves a precious diamond that's been missing for more than forty years.

The squad investigates the ""Letterhead Beatings"" in which several people have been assaulted, tied to their beds, and the first letter of their last names is carved into their foreheads. Palermo is certain there is a message here, but his inability to solve it in time to prevent further victims compounds his burn-out. When the letters add up to spell A-L-E-R-M-O, the solution appears. Palermo realizes the attacks are personal. Chris and T.C. discover she's pregnant. T.C. proposes marriage, but Chris refuses to ""get married at the end of a shotgun."" Each fantasizes about impending parenthood, but just as they're settling into the idea, they learn that Chris is not pregnant after all. Palermo hosts the daughter of his high school sweetheart, a young aspiring actress. A night of dinner and wine lead to lovemaking... and serious morning-after regrets from Palermo, who is already suffering from a mid-life crisis. This and the Letterhead Beatings make him question his current path in life. A

After a high profile Hispanic leader, JOHN PATRONE, who is trying to bring an end to warring gang factions in Santa Monica is slain by a snipers bullet, our young recruits finds the main suspect is a likeable motorcycle mechanic whose daughter committed suicide a year before. When it is learned she was pregnant by PATRONE, and that he was involved in drug dealing and gun running, it appears that this good citizen took the law into his own hands to bring the man down. By episode's end, Bobby Cruz is arrested for concealing evidence and the three other new Pacific Blue cops are under arrest as well. Cannon Boy, a teenager obsessed with firing himself from a cannon, is pursued on the beach.

The worlds of black and white magic collide after a young girl disappears from the boardwalk. Russ and Jamie enter the world of the occult and have sex after falling under the spell of the dark side.

The return of corrupt SMPD detective PERRY MARCUS, who is again using a band of teenagers to set up high level drug dealers. Among the group of runaways is Jamie Strickland's estranged sister, JENNIE. Jamie confesses that it was she who killed their abusive father before he had a chance to continue his ways with Jennie. All this happens under the watchful eye of Internal Affairs investigator, SUSAN JESSUP, who's long had it in for Jamie Strickland and the Pacific Blue unit.

After a series of college kids are hurt for not paying a bookmaker, Russ goes undercover at Pacific University. His own gambling problems are brought to the front as he gets involved with bookmakers, college-age gamblers and a star basketball player who's tempted to shave points.

While working on a Haitian whom they suspect is smuggling in drugs Bobby sees a man whom he arrested a few years ago who is still in prison.

Jamie who was about to go on vacation encounters a singer whose songs gave inspiration and hope when she was incarcerated. After finding her passed out Jamie brings her home. When she comes to she grabs Jamie's gun and tells her to stay away and she then leaves. Jamie needing to find her and her gun tracks her down to her mother's house. She finds her and upon convincing her that she only wants to help her, the singer tells her that she is down and outr because of her record producer. It seems that he is crooked; he takes very large cuts and when someone wants to leave he threatens them, which is what he did to her. Jamie tries to convince Cory that her claims have to be investigated, but Cory saying that this is not a criminal matter declines so Jamie decides to do it on her own. With Monica's help and one of the singers unpublished songs they try to goad the producer into doing something. He then sends his man to get the singer but Jamie saves her. Later Jamie gets the singer a gig o

Jamie Strickland and Cory McNamara go undercover in a sex cult operation. The master is very seductive and has convinced women to prostitute themselves in the name of God. Meanwhile Russ Granger and Monica Harper are on rollerblades trying to catch criminals.

Jamie's sister Jennie returns to Santa Monica, but is kidnapped by young juveniles. The guy Jamie is dating is somehow involved, also the dirty narc Detective Perry Marcus.

After a series of murders in a female prison, Chris goes in undercover in chains while Bobby is placed inside as a prison guard. Monica uses the opportunity to tempt T.C., her next door neighbor, into a sexual situation.

A near death experience changes T.C.'s perspective on life after he comes face to face with ruthless home invaders.

A controversial and outspoken attorney, whose specialty is suing the police department; presently he has a wrongful death suit against them over the death of a young (black) man, whose death he believes was cause by the actions of the two policemen who were pursuing him. He then announces that he has found a witness, who will prove that he is right but he won't name the witness right now. Later at his apartment, someone knocks on the door and shoots him. When the department hears of this, the Chief, who is afraid that the press will assume that a cop is the killer, decides to let the Pacific Blue unit handle the investigation. Cory decides to first look into the possibility that this was the act of a scorned lover or wife, because the way the place was set up, it appears that he was expecting someone. Cory then learns that, that person is his assistant, so Cory goes to her place and finds the murder weapon. She says that she didn't do it and Cory thinks that she is innocent. Cory then

While Bobby Cruz is undercover working the door of a trendy nightclub, a rock musician dies on the front steps. Monica Harper joins him undercover, but grows concerned when Bobby discovers that the nefarious club owner's girlfriend is his old flame, singer Rita Bunwell. Things become more complicated as they rekindle their romance under the nose of the dangerous drug-dealing nightclub owner.

A female boxer dies after an exhibition match. Cory decides to investigate but the new D.A. whom she is attrracted to, is concerned that she might not handle it properly. So he calls T.C. who has depressed ever since Chris left, to come back and he does, which doesn't make Cory happy. She Strickland and Cruz undercover as a boxer and her handler. They discover that the bottle the girl drank from was poisoned and has the fingerprints of Mia St. John on it. They bring her in for questioning and learn that the water bottle is hers and suspect that maybe she was the target. Strickland then meets Joey another boxer who feels that she is being passed over because she is not as attractive as the others. They then learn that Rick who manages Joey was once involved with Mia both personally and professionally. When they try to bring him in he runs away, they manage to catch him, and they grill him about trying to kill Mia but realize that he gave the bottle to the other girl. Cory decides to han

Bobby Cruz' sister, Teresa, witnesses the suicide of a high school classmate and begins to fall under the spell of the girl's manipulative boyfriend. An ambitious rookie cop, recently assigned to Pacific Blue, turns out to be a spy for Internal Affairs. Things get complicated when he's let into the young Pac Blue officers' scheme to frame a ruthless drug dealer.

Jamie goes undercover and befriends a fifteen-year-old snitch after he witnesses a murder. But a rogue Narc is controlling the kid, and is ultimately to blame for his death as well as two dealers. Monica Harper's sexual involvement with Commander McKinnon escalates. As their on-again, off-again relationship progresses, Bobby Cruz discovers his abusive nature and helps Monica trap McKinnon into backing off.

After a young Mafia lawyer and his wife are murdered in their home, Cory catches up with the unharmed six year old boy who's on the run with his real mother, a stripper with whom the Mafia lawyer had a previous affair. Cory is reluctant to bring the pair to the authorities after she learns that the FBI agent working the case is actually the man that the boy identified as the killer who came to their home.

Russ and Cory go undercover in the ugly, violent world of the Nazis, trying to catch the killers of several African-American and Mexican young men. Jamie goes undercover and tries to protect a young boy, a very talented photographer, who has captured a meeting between two powerful adversaries.

A man is shot point-blank through the heart on the beach. In questioning the man's wife, Pacific Blue learns she hired two women to investigate her husband's suspected infidelities. Believing that the wife ordered her husband killed, Cory and Victor go undercover as a married couple to investigate the private investigators, and find that the women in charge lure men into compromising situations which they then videotape for the wives. T.C. and his brother TEDDY are shocked when their parents, ETHAN and CATHERINE CALLAWAY, decide to separate after thirty-five years of marriage.

Pacific Blue tries to figure out why two robbers are holding up a chain of upscale clothing stores since the shops don't carry much cash. In actuality, the store robberies are a cover for FRANK KOVAC, the bodyguard of a prominent businessman (RUDY RIGAS) who has ordered Frank to get back his soon-to-be-ex wife's diamond jewelry. Frank steals the necklace while the wife is shopping at the shop. But Rudy does not know that Frank and his wife plan to double-cross him so that they can run away together. When LINDA DOMINGUEZ, Victor's fiancee, is killed during one of the store robberies, Victor defies department orders and pursues the killers himself. Though the killers are arrested as a result, Victor is suspended and Internal Affairs considers taking away his badge.

Pacific Blue backs into a college call girl ring after the roommate of the girl Bobby is dating is found dead below a 6th story window. Chris is convinced the death is a homicide. The trail leads to a radical female college professor who preaches hooking as a release for women with abusive backgrounds. Cory McNamara miscarries as a result of stress.

T.C. Callaway befriends Kenny Slaughter, an up and coming champion surfer who is being pressured by Rip Cutter, a ruthless manufacturer of surfboards. Monica, being undercover with T.C., evokes jealousy from Chris, while the others pool their money to see who can bust the dumbest criminal among the mob at the Surf Week.

Timothy Stone, the F.B.I. agent who worked with the Bike Patrol on the bombing case in ""Lights Out"", returns to the Firehouse to get Cory and Chris' assistance in investigating a counterfeit ring operating in Santa Monica. Chris and Cory both find themselves attracted to Agent Stone, but when he and Cory begin a romance, Chris feels betrayed. The counterfeiter, Lazlo Parkes-- who the Treasury Department has nicknamed ""Rumplestiltskin"" -- has been passing off fake $100 bills at Santa Monica hotspots with the help of a trio of women: Bree, Sheila and Lana. Lazlo is plotting to exchange one million in fake bills for a supply of heroin from drug lord Alejandro Cruz-- a drug deal that Palermo has ordered T.C. and Victor to investigate. Little does Lazlo expect that Bree is plotting with boyfriend Nicky Mink to kill Lazlo and take off with the money... until the other two women discover the plan.