Loosely. It is based on the true story of the Dybbuk Box, a wine cabinet which is said to be haunted by a dybbuk. It had belonged to a Polish Holocaust survivor named Havela, who had escaped to Spain and purchased it there before emigrating to the United States. The Box had been kept in her grandmother's sewing room and was never opened because a dybbuk -- an evil spirit from Jewish folklore -- was said to live inside it. He offered to give the box back to her, but she became upset and refused to take it. The box contained two 1920s pennies, a lock of blonde hair bound with cord, a lock of black/brown hair bound with cord, a small statue engraved with the Hebrew word "Shalom", a small, golden wine goblet, one dried rose bud, and a single candle holder with four octopus-shaped legs. It was sold in an eBay auction by a seller who claimed that strange things had been happening in their household after purchasing it at a flea market. This is the box that inspired them to make the film.