Whether Pennsylvania law permits a defendant to be convicted as an accomplice to third-degree murder.
Holding
Yes. A defendant may be convicted as an accomplice to third-degree murder if he intentionally aids the conduct causing death and personally acts with the malice required for third-degree murder.
Reasoning
The Court began with the Crimes Code's elements-based approach to culpability. A crime can contain separate conduct, circumstance, and result elements, and the required mental state may differ for each. Third-degree murder requires malice as to the killing, rather than the specific intent to kill required for first-degree murder.
Section 306(c) defines an accomplice as one who acts with the intent to promote or facilitate the commission of an offense, including by aiding or attempting to aid another in planning or committing it. But Section 306(d) specifically addresses offenses with result elements: when causing a particular result is an element of the offense, an accomplice is liable if he acts with the degree of culpability toward that result required for the substantive offense.
Read together, these provisions require an accomplice to purposefully promote or facilitate the criminal conduct, but they do not invariably require him to intend every result of that conduct. For a reckless-result offense, the accomplice need only have the recklessness required of a principal actor regarding that result. For third-degree murder, the corresponding required mental state is malice.
The Court relied on the parallel Model Penal Code provisions from which Section 306 was derived. The Model Penal Code commentary explains that an accomplice who intentionally assists conduct causing a criminal result may be liable for that result when the accomplice personally has the culpability required by the offense. Thus, the statutory framework was designed to reach unintended results arising from jointly undertaken dangerous conduct.
Roebuck's contrary reading would treat Section 306(c)'s general language as controlling in isolation and would effectively erase Section 306(d)'s specific rule for result-based offenses. Statutes must be construed to give effect to all provisions, and the more specific result-element provision governs any apparent tension with the general accomplice definition.
Accordingly, accomplice liability for third-degree murder is neither legally nor logically impossible. The Commonwealth must prove that the defendant intentionally aided the conduct leading to the death and that his own mental state amounted to malice—a conscious disregard of an unjustified and extremely high risk to human life.