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Patrick Davenant invites a group of friends and his daughter to his family-owned theater. Within a short time, the guests realize that they are trapped. A masked killer begins to murder them one by one.

On his birthday evening, Patrick Davenant, a very rich Englishman of ancient nobility invites some friends to visit the old theater located in the family palace, which has been closed for 100 years, since an entire family had perished there. The protagonists of the tragic night are: Patrick's sister Rebecca and her close friend Doris; Patrick's daughter Lynn and her boyfriend Duncan; Patrick's first wife Viviana with her current husband Dr. Dalbert; and starlet Kim with her lover Russel. As the party starts, a mysterious character accompanied by a guru shows up and all the doors immediately close once the new duo are inside. Then begins a chain of crimes and horrors, all committed by Patrick almost ritually, according to a centuries-old curse.—Coming Soon

The story begins when nine individuals receive mysterious invitations to attend a special midnight performance at the Teatro Colosseum, a grand but aging theater that has seen better days. Each recipient finds their curiosity piqued by the unusual nature of the invitation and the promise of witnessing something extraordinary. The group includes a mix of characters from different walks of life, each harboring their own secrets and motivations for accepting such an unusual summons. Upon arrival at the theater, the guests find the building dimly lit and seemingly empty except for themselves. The ornate interior shows signs of neglect, with peeling paint and dusty surfaces creating an atmosphere of faded elegance. As they gather in the main auditorium, confusion grows when no host appears and no performance begins. The doors they entered through are now mysteriously locked, trapping them inside the building. Initially treating their predicament as an elaborate prank or misunderstanding, the group begins exploring the theater in search of answers or alternative exits. The building reveals itself to be a labyrinth of backstage areas, dressing rooms, storage spaces, and hidden passages that create numerous opportunities for concealment. As they search, tension builds between the strangers, with suspicions and accusations beginning to surface. The first murder occurs when one member of the group ventures alone into the basement area. The killer strikes with methodical precision, utilizing a piece of theater equipment to dispatch their victim in a manner that suggests intimate knowledge of the building's layout and contents. The discovery of the body sends shock waves through the remaining survivors, transforming their annoyance into genuine terror. As panic sets in, the group attempts to band together for safety while simultaneously trying to identify the killer among them. However, their efforts are hampered by the building's confusing layout and the killer's apparent ability to move unseen through hidden passages and service corridors. Each attempt to escape or call for help is systematically thwarted, suggesting the murderer has planned this scenario meticulously. The deaths continue with calculated regularity, each murder more elaborate than the last. The killer demonstrates a theatrical flair, using stage props, lighting equipment, and the building's architecture to create increasingly creative death scenes. Costumes and masks from the theater's storage areas are employed to confuse and terrorize the victims, adding an element of macabre performance art to the proceedings. As the body count rises, paranoia reaches fever pitch among the survivors. Alliances form and dissolve as suspicion falls on different members of the group. Personal secrets and hidden connections between the victims begin emerging, suggesting their gathering was not as random as initially believed. The revelation of these connections provides clues to the killer's motive while simultaneously narrowing the list of potential suspects. The investigation reveals that several victims shared a dark secret from their past, connected to a tragic incident that occurred years earlier. This revelation reframes the murders from random acts of violence to calculated revenge, giving the killer's actions a twisted form of justice. The theater itself is revealed to have played a significant role in the original tragedy, making it a symbolically appropriate venue for the final reckoning. In the climactic sequence, the killer's identity is finally revealed through a combination of deductive reasoning and dramatic confrontation. The murderer's motivation stems from a desire to avenge a past wrong that destroyed their life and drove them to this elaborate scheme of retribution. The final confrontation takes place on the theater's main stage, with dramatic lighting and staging creating a suitably theatrical backdrop for the story's resolution. The surviving characters must use their wits and knowledge of the building to outmaneuver the killer in a deadly game of cat and mouse that utilizes every corner of the theater. The resolution brings both justice and tragedy, as the complex web of guilt and revenge finally unravels in the place where it all began.