The felony murder rule, also called the "felony murder doctrine," is a legal principle that holds that someone who is involved in a felony can be held responsible for any deaths that occur during the commission of that crime. Some synonyms for the felony murder rule include "vicarious liability," "constructive murder," and "felony homicide." Other legal terms that are closely related to the felony murder rule include "mens rea," which refers to criminal intent, and "actus reus," which refers to the physical act of committing a crime. Overall, the felony murder rule is an important and controversial legal doctrine that has been the subject of much debate and discussion among legal scholars and practitioners.