Alraune is a 1928 silent science fiction horror film directed by Henrik Galeen and starring Brigitte Helm in which a prostitute is artificially inseminated with the semen of a hanged man. The story is based upon the legend of Alraune and the powers of the mandrake root to impregnate women. In this version the symbiosis caused by the sexual union between the human and the root causes the girl to kill all men who fall in love with her.It's actually a remake--the Hungarian 1918 original is considered lost. You may recall a chapter from Mark Millar & Phil Hester's SWAMP THING story arc "River Run," with an evil Abby Arcane homunculus; it's based on this. Here it is, all of it.