Corpus delicti is a term from Westernjurisprudence referring to the principle that a crime must be proved to have occurred before a person can be convicted of committing that crime. For example, a person cannot be tried for larceny unless it can be proven that property has been stolen. Likewise, in order for a person to be tried for arson it must be proven that a criminal act resulted in the burning of a property. Black's Law Dictionary defines "corpus delicti as: "the fact of a crime having been actually committed". In the American legal system, the concept has its outgrowth in several principles. Many jurisdictions hold as a legal rule that a defendant's out-of-court confession, alone, is insufficient evidence to prove the defendant's guilt beyond reasonable doubt. A corollary to this rule is that an accused cannot be convicted solely upon the testimony of an accomplice. Some jurisdictions also hold that without first showing independent corroboration that a crime happened, the prosecution may not introduce evidence of the defendant's statement.
Murder investigation
Corpus delicti is one of the most important concepts in a murder investigation. When a person disappears and cannot be contacted, many police agencies initiate a missing person case. If, during the course of the investigation, detectives believe that he/she has been murdered, then a "body" of evidentiary items, including physical, demonstrative and testimonial evidence, must be obtained to establish that the missing individual has indeed been murdered before a suspect can be charged with homicide. The best and easiest evidence establishment in these cases is the physical body of the deceased. However, in the event that a physical body is not present or has not yet been discovered, it is possible to prove a crime took place if sufficient circumstantial evidence is presented to prove the matter beyond a reasonable doubt. For example, the presence at a missing person's home of spilled human blood, identifiable as that person's, in sufficient quantity to indicate exsanguination, demonstrates—even in the absence of a corpse—that the possibility that no crime has occurred, and the missing person is merely missing, is not reasonably credible.
Specific offences
In general, all corpus delicti requires at a minimum:
The occurrence of the specific injury; and
some criminal act as the source of the injury.
For example:
Homicide: 1) An individual has died 2) as a result of action by another person.
Larceny: 1) Property is missing 2) because it was stolen.
In essence corpus delicti of crimes refers to evidence that a violation of law occurred, no literal 'body' is needed. Rights are of two kinds, namely "of the person" and "to control external objects". Wrongs are also of two kinds and they are either public or private. Public wrongs are called crimes or public offenses whereas private wrongs are called torts and either involve the breach of a duty of care, a wrongful trespass against the person or property of another, and breaches of agreement or contract. This difference forms the distinction between criminal law and civil law. For a more in-depth explanation, see Sir William Blackstone'sCommentaries, Book 1 beginning about page 52.
Misinterpretation
The Britishserial killerJohn George Haigh destroyed the bodies of his victims with acid apparently because he thought that, in the absence of a corpse, murder could not be proven because there was no corpus delicti. Haigh had misinterpreted the Latin word corpus as a literal body rather than a figurative one. This had previously been the case, under Lord Hale's Rule of “no body, no crime”, but in the twentieth century, the law expanded to allow prosecution for murder solely on circumstantial evidence.
