Lisa develops a crush on Nelson and tries to change him into a better person. Meanwhile, Homer finds an autodialer and starts a telemarketing scam.
Mulder's dreams help him in finding the body of a little girl which reopens one of his old cases in the Violent Crimes Unit. This leads him to believe that the killer he captured had more victims and that Mulder's sister Samantha may have been one of them.
Harry and Sally discover the true meaning of Christmas at the mall, where they get jobs. But Dick turns curmudgeonly. Tommy tries to find the perfect present for August.
Nick is suspicious of a financial advisor that comes to the area, he seems all too keen to advise people with their money matters including Jo's dad. Many of the locals including Maggie and Blaketon receive anonymous letters. Phil has the job of tracking down the type writer which they were written on - he finds it at Claude's house - but Claude's not guilty as he's had a letter himself, he's embarrassed by its content but shows it to Nick and swears him to secrecy! It turns out that it was a local widow's husband who was responsible.
When three people die after coming in contact with something in the clinic, and one is deathly sick, Dr. Mike, Sully, Colleen, and Andrew but their heads together to find out what it was. They figure out that it was something in the clinic and now it is everywhere. In her case, on the instruments, the sheet. The only solution is to burn everything. When that is done, some are genorous enough to give Dr. Mike some of there things, but they are scared to come in. When Sully must get stitches, and lives after being treated by Dr. Mike, she begins the road to being reaccepted by Colorado Springs.
To earn money to buy himself a Christmas gift, Kenan takes a job as a department-store Santa. There he meets an unselfish little boy with a special holiday wish.
Opening--Host: Harry Connick Jr. UBS Vs Sped-Ex The Greatest Action Story Ever Told Cabana Chat Spy Vs Spy-Karate The Reinfather Harry Connick Jr. Song--""Must Have Been Old Santa Claus"" Vancome Lady Christmas Pageant Granny's Liver Harry Connick Jr. Song--""This Guy's in Love With You""
Following a message from his congressional colleague Mark Simonson, John and Kim are drawn to Meridian, Mississippi, where the struggle for voting rights is clouded by the disappearance of three civil rights workers. As Kim senses the Hive's presence in the town, news that Loengard is in Mississippi prompts Bach to act. Then, after being contacted by Etta Mae Tillman, John and Kim are led to where Simonson is hiding after escaping the deadly fate of his three missing civil rights co-workers.
Baltimore, Mariland - Jarod investigates the mystery behind a hit-and-run death of a homeless man known as 'Christmas George' while simultaneously trying to identify a Jane Doe before Christmas. Meanwhile, Sydney anxiously awaits word from Jarod and Miss Parker gets her hopes up spending Christmas with her father.
Ryan accidentally burns down the Max after forgetting to turn off the Christmas tree lights.
Former Bayside High pupil A.C. Slater visits the gang at what's left of the Max after the fire and they all share fond memories of how the Max has been a special part of their lives.
The world's most deadly assassin who has left a trail of blood in history (and may even be involved in the JFK assassination), The Viper, is in town. Walker is informed and recruited by Interpol Agent Draper who's hunting the Viper now for nearly 25 years. Since the killer is in town to carry out another assassination - the target could be the visiting Israeli Ambassador - it's up to Walker to find and eliminate the Viper before he hits once again.
Cadet Blair crashes on to an ice planet, where he meets a Kilrathi that has found out that the whole war was just to make the emperor have total power over the clans.
The Defenders of the Realm are getting ready for the final battle with the forces of evil. For ruling all parts of the dark world Kittana reached an agreement with Sheeva's Warriors. But she doesn't know that she is in fact the cruel Shang Tsung who transformed to look like Sheeva. The good forces break into Shao Kahn's castle and demand that Shao Kahn hands over his rule to the princess. Suddenly Shang Tsung appears with warriors of the real Sheeva. The magician is also after the power the monarch chair. But Tsung forgets one thing, Sheeva has enemies withing the outworld forces. Raiden finds out Shang Tsung's plan and disturbers the fight. The god of thunder brings with him the worst enemy of Sheeva, Motaro's squad. Mortal Kombat continues, but the insurrection failed and The Earth is still in danger.
Frank gets his first case as a primary-- unfortunately it is a case that involves the shooting of Danver's fiancée. Danvers is concerned about Frank being the primary and keeps throwing his opinions into the investigation. Danvers changes his perspective on the death penalty and also reflects on his past performance in many of the cases he's tried. Brodie continues to look for housing; the latest place he tried staying was the morgue. Kellerman is discouraged when it appears as though Cox may have only been looking for a one-night stand and nothing more-- so he takes a sick day. Gee takes some time out of his day to have a talk with Kellerman's former partners to see where they stand with him in regard to their testimonies to the grand jury. He also sees the Deputy Commissioner to see what can be done for Kellerman; what he learns instead are some truths about the Gaffney promotion.
When two aliens bent on making the Earth a freezer, the ducks have their hands full because Dragaunus plans to use solar energy to power his ship up. Can they stop both villains before the Earth becomes a Freezing Oven?!?!
Laura finally gives Curtis the old heave-ho now that Stefan is back to stay. Meanwhile, Carl and Steve get lost in the woods looking for a Christmas tree.
When Cory discovers the men he's working for are in the mob, he quits--and Shawn takes his place.
A memory of Pasha sends Hadji to Calcutta to search for his real father to figure out the truth of his past.
It's Christmas Eve, and Nash and his fellow cops are trapped at the SIU as they wrap up a murder investigation and a prostitution case. Joe borrows Nash's 'Cuda to get it detailed and freaks out when the car is stolen; Nash's personal gifts to Lisa and Whitney get mixed-up; personal crises abound as the cops deal with the Christmas holiday.