A single mother gives her son a beloved doll for his birthday, only to discover that it is possessed by the soul of a serial killer.
This slasher movie follows a relentless killer who is out to avenge the death of a young girl who died after being bullied and teased by four of her classmates. Now high-school students, the guilt-ridden kids have kept their involvement a secret, but when they start being murdered, one by one, it's clear that someone knows the truth. Also coping with the past are members of the dead girl's family, most notably her prom-queen sister, Kim Hammond (Jamie Lee Curtis).
As they celebrate their high school graduation, four friends are involved in a hit-and-run accident when their car hits and apparently kills a pedestrian on an isolated roadway. They dispose of the body and vow to keep the incident a secret, a year later somebody starts sending them letters bearing the warning "I Know What You Did Last Summer".
Norman Bates is still running his little motel, and he has kept the dressed skeleton he calls 'mother'. One day a nosey journalist comes to see him to ask questions about his past.
Unfinished business with coed Julie James brings the murderer to the Bahamas to terrorize her and her friends, Karla, Tyrell and Will, during a vacation. Can Ray Bronson who survived a bloody attack alongside Julie two summers ago, get to the island in time to save everyone?
Catherine is a woman in her late twenties who is strongly devoted to her father, Robert, a brilliant and well-known mathematician whose grip on reality is beginning to slip away. As Robert descends into madness, Catherine begins to wonder if she may have inherited her father’s mental illness along with his mathematical genius. When Robert’s work reveals a mathematical proof of potentially historic proportions, it sets off shock waves in more ways than one.
School's out, exams are over, and it's time for real life to begin. But before 12 friends from the International High School in Prague disappear to the four corners of the earth, they intend to throw the best party of their lives. The idea to stage the party in Prague's biggest swimming pool is illegal but cool. And when Gregor, the laid-back leader of the group thinks an idea is good, then no-one else from the group objects. But what begins as the night of all nights quickly turns into a life and death struggle, as the friends come to realise that death itself is on the guest list... A mysterious masked killer sets a hunt in motion that ranges through the facility's halls and corridors. As the kids panic it begins to dawn on them that the killer must be one of them...
Two co-dependent high school seniors are forced to deal with separation anxiety after their plan to stage a booze-soaked party goes awry.