Michael Webster vandalizes his father's new cuckoo clock by twisting the bird's head backwards so his annoying, bratty, trouble-making younger sister Tara will get blamed for it. However, the plan goes wrong when Michael finds himself reliving his disastrous birthday party – and going backwards in time. The only way to stop it is to fix the bird's head. Though Michael succeeds as a toddler and returns to his normal self, he inadvertently knocks off the year 1988 which was part of the clock and removes/erases Tara from existence. Michael decides to replace the year back on the clock to restore Tara, but not for a while.

Part 1: Billy's summer camp turns scary when Camp Nightmoon becomes Camp Nightmare! Why are all the counselors acting so weird? What is hidden in the forbidden bunk? What lurks around the camp late at night? The counselors are not answering any of Billy's questions. The campers are disappearing one by one, and the counselors do not even care. Billy wants to know the secrets about Camp Nightmoon, but can he find the answers before he disappears?

Part 2: Billy finds out the secret about Camp Nightmoon when the counselors announce a manhunt for a female camper who escaped from the girls' side of the camp where the same scary things are happening.

When Zeke gets to play as the Phantom in the school's titular play The Phantom, strange things start happening. A piece of scenery comes crashing down with a message saying "Last warning. Stay away Esmerelda or else!". Could Zeke be trying to ruin the play? Or could there really be a phantom living under the stage?

Jerry Hawkins moves to a new house and discovers a piano in the basement. He starts taking piano lessons to impress a neighbor, but he realizes something is very odd about his teacher, Dr. Shreek. He is always talking about how Jerry has perfect hands. And the janitor Mr. Toggle is weird too. But Jerry is about to find out that Dr. Shreek loves to steal the hands of his students...

Gabe and his cousin, Sari, are trapped in a pyramid belonging to an Egyptian princess disguised as a modern-day journalist who is controlling a four-thousand-year-old mummy.

Amy Kramer receives a replacement ventriloquist dummy named Slappy, who she accidentally brings to life. Slappy wants Amy to be his slave to the point of framing her for things she did not do. It is up to Amy to stop Slappy and save her family. In the end, Slappy is destroyed by another dummy.

• Starring: Maggie Castle as Amy Kramer, Caterina Scorsone as Sara Kramer, Shadia Simmons as Alicia.

Part 1: Margaret and Casey Brewer are worried about their father. He's been acting strange. And he spends all his time in the basement. What is he doing in the basement? Margaret and Casey are about to find out. Dr. Brewer is doing experiments with plants. But Margaret and Casey become even more worried when they "meet" some of his experiments in the basement.

Kat finds a sponge under the sink of her new house that's actually a monster that causes and feeds on bad luck. When Kat, Daniel, and Daniel's friend Carlos give away the sponge, they find out from Carlos that the sponge is called a Grool and that anyone who has it and gets rid of it, will die...

• Starring: Katharine Isabelle as Kat Merton, Tyrone Savage as Daniel Merton, Amanda Tapping as Mrs. Merton

Friends, Greg Banks, Doug "Bird", Michael and Sherri Walker, find a camera that predicts and causes misfortune on the subject it photographs.

• Starring: Ryan Gosling as Greg Banks, Dan Petronijevic, as Joey Ferris and Scott Speedman as Officer Madison.

Sue and Eddie take a trip to England to visit a castle. When they wander away from their group in the torture chamber, they get chased throughout the castle by an executioner. When they manage to escape, they soon begin to lose their memories of their family and themselves. Sue and Eddie are then sent back in time to the Middle Ages where a man named Morgred reveals that the siblings are really a missing prince and princess whom the executioner, under the king's orders, wanted dead.

Grady Tucker adopts a dog suspected of terrorizing the livestock by his family. Grady tries to prove that Vandal (the dog) is not responsible, but is shocked to find out that a real werewolf may be on the loose.

Part 1: Skipper Matthews finds out his favorite comic book villain, the Masked Mutant, is real after discovering his lair.

Part 2: Skipper Matthews fears he is losing his grip on reality after a visit through the Masked Mutant's lair and discovers that his new best friend is not who she seems.

• Guest Star: Adam West as The Galloping Gazelle.

Tim Swanson steals the bag of tricks from his favorite magician Amaz-O and finds himself unable to control the magic.

Todd Barstow uses his test worms to pull pranks on his little sister, Regina. Then, his test worms show up in his lunch container and in his bed. Thinking that it was Regina, he goes to the woods on a rainy night to search for more worms in order to pull a prank on Regina, but uncovers a cave that is inhabited by a giant worm hell - bent on killing Todd for mistreating her offspring.

Two pranksters' quest to scare fearless Courtney ends with them running scared when they encounter a mud monster at a local swamp.

When Drew Brockman, Walker, Shane, and Shana trick-or-treat with their rivals, Tabby and Lee, they come upon two pumpkin-headed creatures who force them to trick-or-treat forever.

Max and Noah Thompson find a mirror in the attic that turns its users invisible, but on the other side is a world where the evil mirror reflections want to switch places with real people.

Freddy and Cara find a bottle that releases an elderly vampire who lost his fangs.

Gretchen Hughes and Clark Boretski stay at their grandparents' house in the middle of a swamp that has a seemingly invincible monster locked in a room.

A family inherits a sarcophagus that holds a cursed, living mummy.

• Starring: A.J. Cook as Kim

After being taken to the O'Dells family, who owns a collection of ventriloquist dummies, Slappy is brought back to life and plans to test out Zane, a cousin of Trina and Daniel. With the help of another dummy named Rocky, Slappy conspires to turn the three children into dummies. In the end, Slappy is destroyed by a lightning bolt.

• Starring: Hayden Christensen as Zane.

Erin Wright and her friend Marty are trapped in an amusement park based on a horror movie series.

While being babysat by their Aunt Dahlia, Tom and John are forced to eat prune cookies, which turn them into old men as part of a plot to get sold out to two of Aunt Dahlia's widow friends who want husbands.

Part 1: The Morris family get trapped in a theme park called "Horrorland" run by monsters called Horrors.

Part 2: The Morris family compete on a game show run by the Horrors of Horrorland.

• Note: Unlike the original book in which the Morris family escapes—only to find a Horror hanging on to their rear bumper which offers them free tickets to return to Horrorland-there was a twist ending in which they do escape—only to find that their car has been controlled by the Horrors to teeter on the edge of a literal cliffhanger; the ending then cuts to a Horror couple watching the event on their TV set... and then switching it off!

Two friends play a haunted house-themed board game that comes to life and may cost them theirs.

Part 1: Having caused trouble once too often, Brian O'Connor gets sent to an all-boys boarding school that he tries to escape.

Part 2: Brian discovers the secret of the Perfect School; the students are cloned and programmed into being well-behaved so they can be sent home to their parents while the real students are locked away in a basement prison. And also that his best friend is an agent for the faculty and tries to escape before his clone supplants him, Brian stages a breakout only to be caught by his clone. "Brian" is returned to his family but they see that he is too perfect for them until he pulls a prank on them, it is revealed that Brian managed to pose as his clone who was mistaken for Brian and locked in the basement. Brian then hacks into the boarding school's security and opens the doors freeing the students and exposing the school's secret.

Part 1: Visiting his aunt and uncle in rural Wolf Creek, budding photographer, Alex Blackwell, discovers a secret about the werewolves that live in the woods.

Dave buys an ant farm but feeds the ants incorrectly, turning them into bloodthirsty giants.

Slappy is brought back to life and now plans to marry a little girl's doll who proves to be just as evil as Slappy. In the end, Slappy and Mary-Ellen were destroyed by a razor blade and their souls emerge from the dummies. As a result, Slappy possessed Harrison.

Becca Thompson and Benji Connor, on a field trip in the woods, find out why their new science teacher loves snakes so much.

• Note: This episode was dedicated to Becca's actress, Michelle Risi, who died of meningitis following its production. She was 16 years old.

Part 1: Mark Rowe is given a shrunken head from his explorer aunt, only to discover that it has dark powers. Mark then must travel to the Pacific jungle island of Baladora in order to find her.

Part 2: Mark learns of the jungle magic hidden in his shrunken head while searching for his aunt, and learns that her assistants want the shrunken head too.

Part 1: Hannah Fairchild mistakes a boy named Danny Anderson for a ghost of a kid that died in a house fire until she learns from a dark figure, who resembles a shadow, that she's the ghost.

Part 1: Allison Rogers, a teen actress starring in the upcoming movie Cry of the Cat, gets scratched by a strange cat named Rip who she accidentally ran over with her bike and starts acting like a cat.

Part 1: Billy and Sheena Deep are visiting their uncle Dr. Deep in the Caribbean, where they stumble upon a plan to turn normal fish into mutants.

Part 2: Billy, Sheena, and Dr. Deep try to escape from an island that Jacob Ritter – Dr. Deep's assistant – marooned them on but encounter some of Ritter's test subjects along the way. The mutants capture Dr. Deep believing he is responsible for their condition until the children claim that Ritter is the one responsible as he plans to use Deep's formula. As Ritter prepares to flee with the rest of the formula, he is confronted by the mutants. Soon the mutants are cured while Ritter (having been turned into a gill fin man) is put on display at an aquarium.