Is crime of murder in the statute books? I heard that murder in itself isn't a crime-you will be found guilty because of a precedent set many years ago. The actual crime is unlawful killing.
Sorry, didn't finish the answer. In the UK people can be charged with and found guilty of murder under common law, guilty of murder under one of the statutes such as Infanticide, or manslaughter - another form of unlawful killing.
Crimes may exist without any Act of Parliament making them so. Murder is one example. The definition of it, as created by judges ('precedent' ), has been modified by Parliament, in that there is no longer any requirement that the death must occur 'within a year and a day' of the act causing it. Otherwise, it's as it was.