Delaware Code Title 11. Crimes and Criminal Procedure § 272. Liability for the conduct of another--No defense

(1) The other person is not guilty of the offense in question because of irresponsibility or other legal incapacity or exemption, or because of unawareness of the criminal nature of the conduct in question or of the accused's criminal purpose, or because of other factors precluding the mental state required for the commission of the offense;  or

(2) The other person has not been prosecuted for or convicted of any offense based on the conduct in question, or has previously been acquitted thereof, or has been convicted of a different offense or in a different degree, or has legal immunity from prosecution for the conduct in question;  or

(3) The offense in question, as defined, can be committed only by a particular class of persons, and the defendant, not belonging to that class, is for that reason legally incapable of committing the offense in an individual capacity, unless imposing liability on the defendant is inconsistent with the purpose of the provision establishing the defendant's incapacity.