Despite being undercover dressed as Santa Claus, Hooker is finding it hard to get into the Yuletide cheer faced with his first Christmas away from Fran and the children; Stacy too, is low on Christmas spirit, after splitting up with her boyfriend. The Christmas blues set in even deeper when a drug stakeout doesn't go to plan, allowing the main target to get away. Later, after Stacy witnesses an armed hold-up by a man and woman connected with the wanted dealer, the woman is forced to abandon her young baby at a local church. As they try and get a lead on the offenders, Stacy looks after the young baby, but Hooker, Corrigan and Romano become concerned that she may be coming to attached to it too want to give it back...

Hooker and Romano give chase of a couple of armed robbers who have held up a local bank and taken a teller hostage - a high-speed pursuit which ends in the thieves' car ploughing into the side of a tanker. Hooker receives criticism over his decision to give chase, which deepens when it's learnt that the young woman taken hostage has lost her unborn baby as a result of the crash. An old girl-friend of Hooker's, now head of security at the bank, is concerned that the high-speed pursuit was unnecessary and is prepared to testify against him. Meanwhile, the extravagant couple of robbers, who go by the aliases of Bonnie and Clyde, are still at large and pulling heists...

Responding to the latest in a string of rape muggings on women using automatic teller machines, Hooker finds that the latest victim is Episcopal female priest Beth Harrison, an old acquaintance. Although terrified, she agrees to testify when Hooker and the team nab the culprit, but the attacker cunningly goes to church to give confession about the rape to her, leaving Beth sticking to her sworn vow of silence over confessions and thus refusing to give testimony. Hooker tries to convince her to go against her beliefs and testify, or else the rapist will be free back on the streets and strike again...

After the third in a series of murders on attractive young blonde women, Stacy goes undercover to work as a salesgirl at a shopping mall store where each of the girls had worked, to act as bait to try and lure out the killer. With Stacy wired up, Hooker, Corrigan and Romano keep tabs on her until the killer makes himself apparent, but Hooker is concerned when the gun used in the murders suggests the killer to be a cop, and all indications point to the store's security officer being the culprit. But the operation puts Stacy in a dangerous position...