Build a movie plot around this: What does a possessed Connie try to do to Leah? Drown her.
The story takes place at St. Mark's, a Catholic boarding school for girls. One day, a young student, Elizabeth, is studying in a classroom on the third floor, when without warning, she is attacked by unseen evil forces. One of St. Mark's priests, Father Drake, attempts to save Elizabeth from the apparently demonic aggressor, but he quickly proves to be powerless against it, and the girl vanishes without a trace.The school is immediately shut down, and all of the students are removed from campus by worried families. Five years later, the school reopens. A harsh headmistress, Miss Pearce, rules the girls with an iron fist; Father Drake remains at the school as a teacher, but because of the disappearance of Elizabeth he has become a drunkard, found by Miss Pearce at a bar. Five troubled and unwanted girls are left by their families at the school: Alex, Mara, Cecilia who is blind, Leah, and Connie. The girls are strictly forbidden to go to the third floor (the site of Elizabeth's disappearance). Cecilia and Mara enter the third floor, prompting Miss Pearce to punish the responsible party. Alex takes the blame and is severely beaten with a ruler.Alex begins to have visions of Elizabeth being possessed by a demon. Other strange things begin to happen, revealing that all five of the girls possess supernatural gifts. Connie is a "conduit," or a magnet for spirit activity, Leah can pass through objects (though not doors or walls), Cecilia has "second site" or what the viewer could interpret as ESP, Mara can heal recent wounds (she heals Alex after her beating), and Alex has telekinesis.It is revealed that Miss Pearce has brought the girls to the school for a very specific reason and is seen conjuring them to a pentagram on the third floor, after which Connie appears to be possessed. A possessed Connie then attempts to drown Leah and the demon passes into her while Connie falls dead. Leah/Legion (who can now pass through doors) goes to confront Father Drake, revealing the name of the demon: Legion. They argue, Father...