House of 9 (2005) on Netflix

Nine strangers - a priest; a dancer; a designer; an aspirant rapper; a former tennis pro; a woman on probation; an unsuccessful composer and his wife; and a detective - are randomly abducted, drugged and locked in a house by a wealthy maniac. They are informed through a public address system that there are seventy-five cameras following them, and only one will survive and win US$ 5,000,000.00 to keep quiet. The psychological game begins, with fear and greed affecting the participants.