31Criminal Law

Parties to Crime & Accomplice Liability

Accomplice liability makes a person liable for the crimes of another when they aid, abet, counsel, or encourage the crime with the intent that it be committed. This week covers the distinction between principals and accessories, the requirements for accomplice liability, and withdrawal.

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Learning Objectives

Distinguish principals (first and second degree) from accessories (before and after the fact) under common law
Apply modern accomplice liability: aid/abet/counsel/encourage with intent that the crime be committed
Analyze the 'natural and probable consequences' doctrine for extending accomplice liability beyond the planned crime
Identify valid withdrawal from accomplice liability and its requirements

Key Rules

Common law parties: Principal in first degree (actual perpetrator); principal in second degree (present, aids); accessory before the fact (assists but not present); accessory after the fact (helps after crime — separate offense).
Modern accomplice liability: (1) Intentional aid, abet, counsel, or encourage the commission of a crime, (2) with the intent that the crime be committed. Mere presence + knowledge is NOT enough — requires active assistance or encouragement.
Natural and probable consequences: An accomplice is liable not only for the planned crime but for any other crime that is a natural and probable consequence of the criminal enterprise.
Withdrawal: Must (1) communicate withdrawal to all co-participants AND (2) take affirmative steps to neutralize assistance already provided (e.g., notify police, retrieve weapons). Must occur before the crime is committed.

Parties to Crime & Accomplice Liability

Accomplice Liability

The Core Rule

A person who intentionally aids, abets, counsels, or encourages another to commit a crime is guilty as an accomplice — liable for the SAME crime as the principal.

Requirements

1. Actus reus: Aid, abet, counsel, encourage, or facilitate 2. Mens rea: Intent that the underlying crime be committed

What IS Sufficient Aid

- Serving as lookout - Providing weapons or tools - Driving the getaway car - Giving information/plans - Encouragement/moral support (if it actually emboldens)

What is NOT Sufficient

- Mere presence at the scene - Knowledge that a crime is occurring (without active help) - Failure to prevent a crime (generally no duty to intervene)

Natural and Probable Consequences

Accomplice is liable for: 1. The target crime they intended 2. Any other crime that is a natural and probable consequence of the criminal scheme

Example: A and B plan a robbery. During the robbery, B kills a guard. A is liable for the murder if killing was a natural and probable consequence of armed robbery.

Baby Bar Connection

Accomplice liability is tested whenever multiple defendants participate in criminal activity. The examiners want to see whether you can: (1) identify who is the principal and who is the accomplice, (2) apply the intent requirement, and (3) extend liability through natural and probable consequences.

Cases to Know

State v. Tally (1894) — encouragement sufficient for accomplice liability even without physical assistance
People v. Beeman (1984) — accomplice must intend that the crime be committed, not merely know about it

California Codes — Official Authority

The statutes SofAI ties to this topic. Use them as your IRAC rule block, then verify the current text on the official leginfo link.

Cal. Penal Code §26 — Persons capable of committing crime (defenses)leginfo
Certain people are not capable of committing crimes, including some minors and people acting under a mistake of fact or without criminal intent.

Explore all California Codes

Baby Bar Relevance

Accomplice liability is commonly tested on the Baby Bar in multi-defendant criminal law essays. The natural and probable consequences doctrine frequently appears alongside felony murder analysis.

Week 30 Back to Dashboard Week 32

Learning Objectives

Distinguish principals (first and second degree) from accessories (before and after the fact) under common law

Apply modern accomplice liability: aid/abet/counsel/encourage with intent that the crime be committed

Analyze the 'natural and probable consequences' doctrine for extending accomplice liability beyond the planned crime

Identify valid withdrawal from accomplice liability and its requirements

Key Rules

Common law parties: Principal in first degree (actual perpetrator); principal in second degree (present, aids); accessory before the fact (assists but not present); accessory after the fact (helps after crime — separate offense).

Modern accomplice liability: (1) Intentional aid, abet, counsel, or encourage the commission of a crime, (2) with the intent that the crime be committed. Mere presence + knowledge is NOT enough — requires active assistance or encouragement.

Natural and probable consequences: An accomplice is liable not only for the planned crime but for any other crime that is a natural and probable consequence of the criminal enterprise.

Withdrawal: Must (1) communicate withdrawal to all co-participants AND (2) take affirmative steps to neutralize assistance already provided (e.g., notify police, retrieve weapons). Must occur before the crime is committed.