Course-focused and comprehensive, the Textbook on series provides an accessible overview of the key areas on the law curriculum. This chapter discusses the meaning of accomplices, vicarious liability, and corporate liability. All the parties to a crime are accomplices. The person who perpetrates the crime is referred to as the principal. Others, not being principals, who participate in the commission of an offence are referred to as accessories or secondary parties and will be liable to conviction if it is proved that they aided, abetted, counselled, or procured the commission of the crime by the principal. Vicarious liability is a form of strict liability arising from the master–servant relationship, without reference to any fault of the employer. A corporation is a legal person and therefore may be criminally liable even though it has no physical existence and cannot act or think except through its directors or servants.