Section 76 of the Indian Penal Code: Nothing is an offence which is done by a person who is, or who by reason of a mistake of fact and not by reason of a mistake of law in good faith believes himself to be, bound by law to do it. [i] Mistake of fact arises when an accused misunderstood some fact that negates an element of crime. This legal weapon can be used, where accused succeeds to prove that he/she was mistaken to the existence of some facts or ignorant of the existence of such facts. It is a condition that such mistake must pertain to fact not law. In R v. Princes (1875) LR 2 CCR 154 , in this case, the accused was charged of unlawfully taking an unmarried girl of 16 years against the will of her father, it was found that the accused had bona fide and reasonable belief that the girl was older than 16 years. It was held that the defense was not valid on the ground that act of abduction is a wrongful and immoral act. [ii] Section 79 of the Indian Penal Code...