In criminal law, a perpetrator-by-means is a person who manipulates a perpetrator into committing a crime by exploiting their mental health condition, other excusable condition, or by duress.Criminal Law - Cases and Materials, 7th ed. 2012, Wolters Kluwer Law & Business; John Kaplan, Robert Weisberg, Guyora Binder, , The term is contrasted with accomplice.
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