sentences:  Other issues arose because of technical reasons; one scene required flooding a hallway with 3,300 gallons of water.Many of the scenes were filmed at Riverview Hospital, a mental health facility located in Coquitlam, British Columbia.Agents Fox Mulder (David Duchovny) and Dana Scully (Gillian Anderson) are called to the Excelsis Dei private nursing home in Worcester, Massachusetts in order to investigate a nurse's claim that she was raped by an invisible entity.