Donnas senior prom is supposed to be the best night of her life, one of magic, beauty, and love. Surrounded by her best friends, she should be safe from the horrors of her past. But when the night turns from magic to murder there is only one man who could be responsible, the man she thought was gone forever. Now, Donna and her friends must find a way to escape the sadistic rampage of an obsessed killer, and survive their Prom Night.

When a crime is committed on the border of Quebec and Ontario, everyone is forced to come together, whether they want to or not. As the investigation gets underway, we meet David Bouchard and Martin Ward, members of their respective provincial police forces who are forced to work together. The two men couldn’t be more different. In fact, the only thing they appear to have in common is that they are both cops, albeit cops with totally different styles.

Late at night, in an unnamed U.S. city, a solitary man sits at a bus stop. A pregnant woman runs by, pursued by a man with a gun. With reluctance, the man at the bus stop rescues her and assists with the baby’s delivery, while additional pursuers fire at them, including the gang’s particularly nasty leader, an intuitive man named Hertz. Our hero, known only as Smith, determines to save the child and find out why Hertz wants the baby dead. At a local bordello, he tries to employ a lactating hooker to watch the child, but things quickly escalate, and this makeshift family is soon on the run. Heavy metal music calms the baby. Why? A laboratory, a gun factory, and a presidential campaign all figure in Smith’s search for the child’s ultimate safety.

Two men wake up at opposite sides of a dirty, disused bathroom, chained by their ankles to pipes. Between them lies a dead man loosely clutching a hand-held tape player and a handgun. Each finds a tape the perfect fit for the player in their back pocket. They play the tapes. One is threatened, the other isn’t. But they have a task: One must kill the other by 6:00, or his wife and daughter will die. They find hacksaws in a toilet, and try to cut the chains, but it doesn’t work. They are the two newest victims of the Jigsaw Killer. In a flashback, we learn of Amanda, a girl who falls victim to the Jigsaw Killer. On her head is a mask, which is hooked into her lower jaw. There is a timer on it. Only one key will unlock it, and that key is in the digestive tract of her cell mate who lies paralyzed on the opposite side of the room. If she doesn’t unlock the mask in time, her lower jaw will be ripped wide open. She survives, but her cell mate doesn’t. Through a series of flashbacks, we learn of more victims, and of the nearly-successful capture of the Jigsaw Killer, who doesn’t actually kill his victims. Instead, he finds ways to make them kill either themselves, or each other, and he thinks the entire ‘game’ out perfectly, with no other ways out. Or so it would seem.

Rowena Price is a muckraking reporter for a New York paper. When her story about a closeted gay Senator who preaches family values is spiked, she quits and soon finds herself investigating the grisly murder of a childhood friend. Her friend had been dumped by ad exec Harrison Hill, so he’s Rowena’s prime suspect. Rowena gets a job at the ad agency as a temp, and she’s soon the object of Hill’s attentions. She’s helped in her subterfuge by Miles Haley, a friend at the paper who has a secret thing for her. Everyone, it seems, has secrets, including Hill, who must keep his affairs from his wife - her money fuels his lifestyle. Murder will out?

Megan Voorhees (Natasha Lyonne), is possessed and two priests, Father McFeely (James Woods) and Father Harris (Andy Richter), must drive the demon out, but the exorcism doesn’t go as planned. A year later, survivors Cindy Campbell (Anna Faris), Ray Wilkins (Shawn Wayans), and Shorty (Marlon Wayans) and Brenda Meeks (Regina Hall), are at college, trying to forget the incidents that occurred last Halloween. Cindy is falling for Buddy (Christopher Kennedy Masterson), who loves to give wedgies, and Ray is still confused about his sexuality. Professor Oldman (Tim Curry) and his paralyzed assistant, Dwight (David Cross), have decided to do a research study at Hell House, the house where the bad exorcism took place, and disguise it as a sleep disorder study. Chaos starts as soon as Cindy arrives and meets the creepy caretaker (Chris Elliot) with the funny hand. But the house has some deep dark secrets that the group has to solve, even if they are scary or disgusting.

A contract killer sees a chance to free himself from a tragic past.

A dark tale based on the true story of Aileen Wuornos, one of America’s first female serial killers. Wuornos had a difficult and cruel childhood plagued by abuse and drug use in Michigan. She became a prostitute by the age of thirteen, the same year she became pregnant. She eventually moved to Florida where she began earning a living as a highway prostitute—servicing the desires of semi-truck drivers. The tale focuses on the nine month period between 1989 and 1990, during which Wuornos had a lesbian relationship with a woman named Selby. And during that very same time, she also began murdering her clientele in order to get money without using sex. This turned the tables on a rather common phenomena of female highway prostitutes being the victims of serial killers—instead Wuornos, herself, carried out the deeds of a cold-blooded killer.

Jigsaw has disappeared. Now aided by his new apprentice Amanda, the puppet-master behind the cruel, intricate games that have terrified a community and baffled police has once again eluded capture and vanished. While city detectives scramble to locate him, Dr. Lynn Denlon is unaware that she is about to become the latest pawn on his vicious chessboard. One night, after finishing a shift at her hospital, Lynn is kidnapped by the deranged Amanda and taken to an abandoned warehouse where she meets Jigsaw, aka: John Kramer, who’s now bedridden and on the verge of death. Lynn is told that she must keep the madman alive for as long as it takes Jeff, another of his victims, to complete a game of his own. Racing against the ticking clock of Jigsaw’s own heartbeat, Lynn and Jeff struggle to make it through each of their vicious tests, unaware that Jigsaw and Amanda have a much bigger plan for both of them…

Jonathan Ecks (Antonio Banderas), an FBI agent, realizes that he must join with his lifelong enemy, Agent Sever (Lucy Liu), a rogue DIA agent with whom he is in mortal combat, in order to defeat a common enemy. That enemy has developed a “micro-device” that can be injected into victims in order to kill them at will.