Many of the scenes where one or the other protagonist is invisible are based on scenes in The Invisible Man. At one point Fawzi lets out a hysterical laugh and runs amok in a nightclub, just like
Claude Rains' character runs amok in the small town in The Invisible Man. In the final scene of the movie Yassine is bandaged up and wears a pair of sunglasses, recreating the look of Rains in the earlier film.