Kolobos (1999) on Netflix

Night. Rain splatters the city. A young couple out for a drive take a shortcut through a deserted alley and makes a gruesome discovery: a girl, savagely slashed and battered, lies in a pool of her own blood. As the girl loses consciousness, she utters one word of explanation - 'Kolobos'. Flash back to 36 hours earlier. Down-on-her-luck artist Kyra Mitchell has just landed a dream job - a 3-month gig as a lab rat in an anthropology-related experimental film. In exchange, she gets free food and lodging in a fully-furnished mountain resort. Her new roommates, wise-cracking Tom, struggling actress Erica, college drop-out Gary and fast-food engineer Tina know little about Kyra's past. She allows them to see her artwork - dark, disturbing pieces - but tells them nothing about her inspiration - a faceless man who haunts her in nightmares and waking dreams. Still, happiness and camaraderie prevail - until night falls. On her way to grab a soda in the kitchen, Tina walks into a deadly booby trap. When her horrified roommates try to get help, the house locks down, trapping them inside. The surviving roommates race against time to find a way out, all the while being stalked by a faceless killer who Kyra fears may have been more than just a figment of her imagination.

—Armitage Pictures

Five young individuals agree to live in an isolated lodge together and have their daily activities filmed. But soon the house is locked down and they each run into the murderous clutches of a faceless serial killer who may not be working alone.

—Brian