Also known as:accessory before the fact · accessory before the facts
Written by attorneys · grounded in primary & secondary sources — see below
A category of criminal participant at common law consisting of a person who aids, abets, or encourages the commission of a felony but is not present at the scene when the crime occurs.
Sources & Authorities
How it applies
Common Examples
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Retired Supervisor Supplies Fraud Blueprint
Aisha Ahmed supervised claims at an insurance company. While drinking with her friend Alan Ackerman, Aisha explained how to file fake accident claims using real policy numbers and offered to text sample narratives. Aisha retired and moved away before Alan later filed the fraudulent claims following her instructions. Aisha's advance encouragement without presence at the filings places her in the accessory-before-the-fact category.
Consultant Provides Theft Tools Remotely
Austin Abbott worked as an engineer at an aerospace firm. Anika Anand, a consultant abroad, had previously encouraged the theft of proprietary design files and supplied encrypted storage devices in advance. Anika remained in Europe and never appeared at the hangar where Austin copied the files. Anika's remote encouragement without scene presence classifies her as an accessory before the fact.
Select any source to read its text and confirm it supports the definition.
Common Law
Casebooks
Course Outlines
Planner Supplies Robbery Diagram Offsite
Adam Anderson decided to rob a gas station. Arthur Abrams, working from another city, prepared a detailed diagram of the station layout and delivered specialized tools weeks earlier. Arthur stayed home during the robbery itself. Arthur's preparatory aid without presence at the scene establishes accessory-before-the-fact liability.
Enmund v. Florida458 U.S. 782, 102 S.Ct. 3368, 73 L.Ed.2d 1140 (1982)
Partner Gives Advance Hacking Credentials
Atlas Ventures operated a broadcast studio. Aether Technologies employee Anika Anand met with a producer and supplied hacking instructions and credentials during an in-person session, then left for an off-site conference. Anika later directed the upload remotely but had already departed the physical location. Anika's initial planning aid without scene presence makes her an accessory before the fact.
Hyde v. United States225 U.S. 347, 369
Seller Transfers Stolen Goods Knowing Destination
Argonaut Shipping employee Alan Ackerman possessed stolen silverware. He sold it to Austin Abbott knowing Abbott would transport the goods across state lines in violation of federal law and desiring that outcome. Alan completed the sale in New York and remained absent from the interstate transport. Alan's knowing pre-transport assistance without presence during the movement establishes accessory-before-the-fact status.
Backun v. United States112 F.2d 635, 637 (4th Cir. 1940)
Judge Blocks Warning to Intended Victim
Adam Anderson planned an attack on a rival. Judge Arthur Abrams sent a telegram instructing a marshal to withhold a warning message from the intended victim, thereby preserving the conditions for the assault. Arthur remained away from the attack location. Arthur's advance interference without presence at the crime scene qualifies him as an accessory before the fact.
State ex. rel. Attorney General v. Tally102 Ala. 25, 15 So. 722, 739 (1894)
Common questions
Frequently Asked
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What distinguishes an accessory before the fact from a principal in the second degree?+
An accessory before the fact aids or encourages the felony but stays away from the scene. A principal in the second degree provides the same aid or encouragement while present at the scene. The presence distinction determines the category under common law classifications.
Supporting sources
Does retirement or departure after giving aid eliminate accessory-before-the-fact liability?+
No. The offense is complete when the encouragement occurs. Later retirement or absence from the scene does not erase the prior aid under common law rules.
Supporting sources
Can an accessory before the fact be convicted without a prior conviction of the principal?+
Yes. Common law historically required the principal's conviction before trying an accessory, but that rule has been relaxed, especially in joint proceedings.
Supporting sources
What conduct satisfies the encouragement element for accessory-before-the-fact liability?+
Supplying concrete instructions, diagrams, tools, or credentials that enable the crime meets the element. The aid need not be contemporaneous with the offense or involve direct solicitation on the day of the crime.
Supporting sources
458 U.S. 782, 102 S. Ct. 3368, 73 L. Ed. 2d 1140 (1982)Criminal Law
…1976), cert. denied, 434 U. S. 878 (1977). Although petitioner could be convicted of second-degree murder only if he were an accessory before the fact rather than a principal, the Florida Supreme Court reasoned: "[T]he only evidence of the degree of his participation is the jury's likely inference that he was the person in the car by…