I’ve watch this movie about 3 years ago. The main character is an investigator and the story takes place in London (not 100% sure). In the first scene, the investigator arrests a thug, cuts his ball off and eat it. I don’t remember the plot but I recall two distinctive character. One is a widow in a wheelchair, played by a puppet, and the second is a heroin addicted fetus that is kept in the shirt front pocket of the investigator. I think that the main vilain is Hitler. I hope you guys can help me, thanks!