Hum Kaun Hai? (2004)

Sandra Williams lives in an isolated house with her kids Sarah and David. Her husband Frank, an army officer, is away from the house in the war zone. Sandra writes a letter to employment agency for replacements of her missing servants. Martha Pinto, Maria and Edgar arrive to work in the house. The house has certain rules - Sandra has cut the electricity to live in the dark as her children are allergic to sunlight. The servants can't remove the house curtains and all work has to be completed in daytime. Sarah suddenly feels presence of an outsider in the house - a boy of her age whom she calls Vicky. No one believes her, but strange things keep on happening in the house and Sandra decides to take the help of a priest. On her way to meet the priest she suddenly comes across Frank and gets him home. She and the children are overjoyed, but Frank seems to be in a lost world. Meanwhile Martha, Maria and Edgar share a secret and are waiting for the right time to share it with Sandra.