Editing Theft (section)

==Elements==

The ''[[actus reus]]'' of theft is usually defined as an unauthorised taking, keeping, or using of another's property which must be accompanied by a ''[[mens rea]]'' of [[dishonesty]] and the [[intention (criminal law)|intent]] to permanently deprive the owner or rightful possessor of that property or its use.

For example, if X goes to a restaurant and, by [[mistake of fact|mistake]], takes Y's scarf instead of her own, she has physically deprived Y of the use of the property (which is the ''actus reus'') but the mistake prevents X from forming the ''mens rea'' (i.e., because she believes that she is the owner, she is not dishonest and does not intend to deprive the "owner" of it) so no crime has been committed at this point. But if she realises the mistake when she gets home and could return the scarf to Y, she will steal the scarf if she dishonestly keeps it (see [[theft by finding]]). Note that there may be [[civil liability]] for the [[tort]]s of [[trespass to chattels]] or [[conversion (law)|conversion]] in either eventuality.