The film takes place in two different times: the present and 11 years earlier. The two plotlines are told in parallel through flashbacks. In 2002, software engineer Alan Russell moves into a new house with his wife Marie, 10-year-old son Tim, and 12-year-old daughter Kaylie. Alan purchases an antique mirror to decorate his office. Unknown to them, the mirror is malevolent and supernaturally induces hallucinations in both adults; Marie is haunted by visions of her own body decaying, while Alan is seduced by a ghostly woman named Marisol, who has mirrors in place of eyes.
Flatmates Jemma (Jemma Dallender), Matt (Joshua Dickinson), and Steve (Nate Fallows) have decided to purchase a haunted mirror off of eBay in the hopes of winning the James Randi Foundation’s Paranormal Challenge. If they can show proof of supernatural or paranormal activity that can hold up under scientific testing, they will win a million dollars. After receiving the mirror, the trio sets up cameras to record any and all events that occur around the mirror, only to find that this may prove fatal.
After a violent thunderstorm, David Drayton (Thomas Jane), a graphic artist, and wife Stephanie (Kelly Collins Lintz) check the damage. They find a large tree planted by David's grandfather has fallen on the house and another tree belonging to next-door neighbor Brent Norton (Andre Braugher) has demolished their boat house. David and Stephanie notice a strange mist floating across the surface of the lake towards their property.
Brothers Marion (Mike Bradecich) and Jarmon (John LaFlamboy) have inherited a run-down apartment building. Dealing with their tenants and maintaining the building are the least of their concerns as they soon find that a mole man (Justin DiGiacomo) has taken up residence in the basement and is devouring people one by one.
The Mommy Returns tells the story of a mother, Ruby (Pokwang), who dies right on the day of her 25th wedding anniversary with husband, William (Gabby Concepcion). With her untimely death, she leaves behind her three children Amethyst (Kiray Celis), Topaz (Gerald Pesigan), and Sapphire (Jillian Ward).
The film begins in 18th century Spain, with Father Lorenzo (Paul McGann) and Mother Agueda (Isla Blair) being tried before the Spanish Inquisition, and Lorenzo agreeing to confess and tell his story in order to escape torture. The setting then turns to the past, where Lorenzo is a charismatic and admired priest. He listens to a confession by a young nun named Sister Ines (Aitana Sanchez-Gijon), who has become pregnant, and reports her to the covenant’s leader, Mother Agueda, despite the girl’s pleas for help.
En pleine nuit, une mère divorcée, accompagnée de sa fille, roule dans des petites routes de campagne pour rendre visite à son-mari. Après avoir heurté un animal, elles tentent de sortir de la forêt dans laquelle elles sont perdues. Mais elles sont les proies d'une créature surnaturelle...
A gangster named Scot Webster (Philip Terry) attempts to save his sister, Susan (Ellen Drew) from the clutches of rival gangster W.S Bruhl (Paul Lukas). When one of Bruhl's gang members catches Scot in Bruhl's rented room, one of Scot's aides is killed by a gunman. The man tosses him the gun and disappears. Scot is tried and executed. A scientist (George Zucco) salvages his brain and transplants it into a gorilla. Using the strength of his new, bestial body, Webster begins stalking the gangsters to exact his revenge.
Dr. Markoff (J. Carrol Naish) has concocted a formula that spreads a hideous disease named acromegaly - which extends bones and distorts facial features. Markoff has no moral dilemma in experimenting on unsuspecting human subjects. His amoral behavior assumes monstrous dimensions when famed concert pianist Lawrence (Ralph Morgan) is injected with the doctor's disease-inducing serum. In return for an antidote, Markoff intends to exact more than his pound of flesh by extorting a fortune from Lawrence and demanding the hand of the musician's pretty daughter Patricia (Wanda McKay).
The setting is the sleepy lighthouse town of Piedras Blancas. Sturges (Harmon) is the lighthouse keeper of the town and is very superstitious and concerned for the safety of his teenage daughter, Lucy (Carmen). He leaves food for a sea monster who lives in a nearby cave. The locals disregard him at first, but they begin to take notice when the bodies of people murdered by the monster are found on the beach. A local scientist identifies a scale as being from a "diplovertebron," a prehistoric amphibious reptile presumed long extinct.
The Monster Squad is a society of young pre-teens who idolize classic monsters and monster movies and hold their meetings in a tree clubhouse. Club leader Sean (Andre Gower), whose five-year-old sister Phoebe (Ashley Bank) desperately wants to join the club, is given the diary of legendary monster hunter Dr. Abraham Van Helsing (Jack Gwillim), but his excitement abates when he finds it is written in German. Sean, his best friend Patrick (Robby Kiger), and the rest of the Monster Squad visit an elderly man, known as the "Scary German Guy" (Leonardo Cimino), actually a kind gentleman, to translate the diary. When the Monster Squad wonders how the German man is so knowledgeable about Van Helsing's battle with monsters, he wryly comments that "he has some experience with monsters" and his shirt sleeve briefly reveals a Concentration camp number tattoo.