Silent Night (2012)

A mysterious man dresses in a Santa Claus suit, complete with a mask. Once dressed, "Santa" captures and kills Deputy Kevin Jordan in the small town of Cryer, Wisconsin. Jordan is sleeping with the married Alana Roach and is electrocuted with Christmas lights in his home. The following day, Christmas Eve, Sheriff James Cooper calls Deputy Aubrey Bradimore in on her day off when Jordan does not arrive at work. Aubrey is a new addition to the sheriff's office and is still reeling from the unexpected death of her husband John. She does not think she is a good deputy, as she is trying to live up to her father, a retired sheriff. Aubrey was going to spend the holiday with her parents but instead goes out to check on Jordan, finding his mangled body, and Roach, who has been dismembered, later in the day. Sheriff Cooper decides not to tell Mayor Revie until the case is solved.

Meanwhile, the masked Santa killer goes on a murder spree, killing those who have done something he considers 'naughty.' His next victim is a bratty teenage girl who he kills with a cattle prod. He then makes his way to the local motel, murdering Frank and Goldie during a softcore porn shoot. Maria tries to hide in a Christmas tree farm, but the killer chops off one of her legs and shoves her into a woodchipper. Sheriff Cooper calls in Deputy Stanley Giles and goes out to find the killer himself but comes back empty-handed. The killer Santa arrives at the church and kills the perverted Reverend Madeley for stealing donation money. Aubrey starts to suspect drug dealer Stein Karsson as the killer.

Aubrey attempts to interrogate Karsson, but he flees. Aubrey gives chase, and she is nearly killed but is narrowly saved by Sheriff Cooper. Aubrey and Cooper suspect Santa portrayer Jim Epstein as the killer, who now kills Mayor Revie, his daughter Tiffany, and her boyfriend Dennis. During the town's annual Christmas parade, Aubrey searches for the killer but is unable to identify him among a crowd of men dressed in Santa Claus suits, though she arrests Jim when he flees from her. Aubrey goes to Karsson's motel room to arrest him and is forced to kill him when he draws a gun.

Aubrey notices a gift box that contains a piece of coal and recalls that both the station and her father had received the same gift. Aubrey arrives at her parents' home, only to find her father disemboweled and her mother hiding in the closet. Meanwhile, the killer attacks the station, killing Giles with an axe, torching Cooper with a flamethrower, and beating Jim to death with brass knuckles. Aubrey, along with the station secretary Brenda, are cornered inside the police station, where the killer tries to burn down the building with a homemade flamethrower. Aubrey is able to overpower the killer Santa and sets him on fire, leaving the station with Brenda. Unbeknownst to them, the killer manages to survive and escape.

It is revealed that the killer Santa is Ronald Jones, Jr., owner of a local chimney cleaning and repair service. During the manhunt, Aubrey learned from Karsson that Ronald Sr. had crashed his ex-wife's Christmas party many years ago, burning her alive with the homemade flamethrower. Aubrey's father Hank was the deputy that responded to the situation and gunned him down, causing the flamethrower to explode, burning him to death, only to find out that Ronald Jr. was in his father's truck watching the entire time. The tragedy caused Ronald Jr. to go insane and seek revenge, dressing as Santa so he would not get caught during Cryer's Christmas festivities. The film ends with Ronald Jr leaving Cryer in his truck.