548. Murder: Alternative Theories
The defendant has been prosecuted for murder under two theories: (1) malice aforethought, and (2) felony murder.
Each theory of murder has different requirements, and I will instruct you on both.
You may not find the defendant guilty of murder unless all of you agree that the People have proved that the defendant committed murder under at least one of these theories. You do not all need to agree on the same theory.
This instruction is designed to be given when murder is charged on theories of malice and felony murder to help the jury distinguish between the two theories. This instruction should be given after the court has given any applicable instructions on defenses to homicide and before CALCRIM No. 520, Murder With Malice Aforethought.
If there is evidence of multiple acts from which the jury might conclude that the defendant killed the decedent, the court may be required to give CALCRIM No. 3500, Unanimity. (See People v. Dellinger (1984) 163 Cal.App.3d 284, 300-302 [209 Cal.Rpt. 503] [error not to instruct on unanimity where evidence that the victim was killed either by blunt force or by injection of cocaine].) Review the Bench Notes for CALCRIM No. 3500 discussing when a unanimity instruction is required.
(New January 2006)