State v. John R. Farner, Jr.

The primary issue presented in this appeal is whether Tennessee law recognizes a co-perpetrator rule which bars the defendant's convictions for criminally negligent homicide on the basis that the victims were co-participants in the drag race. After fully and carefully considering the record in this case in light of the relevant authorities, we conclude that no rule of Tennessee law bars the defendant's convictions for criminally negligent homicide as a matter of law. We hold that causation in criminal cases generally is a question of fact for a properly instructed jury, that a victim's contributory negligence is not a complete defense but may be considered in determining whether or not the defendant's conduct was a proximate cause of death, and that a jury's determination of the causation issue will be reviewed on appeal under the familiar sufficiency of the evidence standard and not disturbed so long as the evidence is sufficient to support the jury's determination. Because the trial court in this case failed to provide the jury with an instruction on proximate causation, an essential element of the offense, and because the jury was erroneously provided an instruction as to criminal responsibility, a theory that the State now concedes is inapplicable, the defendant's convictions for criminally negligent homicide must be reversed.