The Defense of Insanity. This paper will determine whether or not the defense of insanity is indeed a valid one. The concept of mens rea will first be elaborated, followed by an analysis of when the defense of insanity can be applied, and concluded by a brief discussion on the credibility of criminal insanity. 5.5 pgs. 10 f/c. 5b. Pages: 5.5 Bibliography: 5 source(s) listed Filename: 2617 Defense of Insanity.doc Price: 49.22