An Unseen Enemy  An Unseen Enemy is a 1912 Biograph Company short silent film directed by D. W. Griffith, and was the first film to be made starring the actresses Lillian Gish and Dorothy Gish. A critic of the time stated that "the Gish sisters gave charming performances in this one-reel film". The film was shot in Fort Lee, New Jersey where early film studios in America's first motion picture industry were based at the beginning of the 20th century. Consistent with practice at that time, the actors in the cast and their roles are not listed in the film. A physician's death orphans his two adolescent daughters. Their older brother is able to convert some of the doctor's small estate to cash. It is late in the day, and with the banks closed he stores the money in his father's household safe. The slatternly housekeeper, aware of the money, enlists a criminal acquaintance to help crack the safe. They lock the daughters in an adjacent room, and the drunken housekeeper menaces them by brandishing a gun through a hole in the wall. The resourceful girls use the telephone to call their brother who has returned to town. He gets the message and organizes a rescue party. Lillian and Dorothy Gish play the two sisters in peril in this "race to the rescue" film. To emphasize their sisterhood, they wear identical outfits, hairstyles, and perform similar gestures. The other two films where the Gishes play sisters are "The Lady and the Mouse" (1913) and "Orphans of the Storm" (1922).