The use of hypnosis during a legal/criminal investigation such that evidence collected during hypnosis will be acceptable in courts. This usually requires specialized training and not all legal jurisdictions will accept evidence discovered during hypnosis.
Readers, please enjoy this guest blog post by Sandra Kynes, author of several books, including The Herb Gardener's Essential Guide, Plant Magic, and the new Witches' Encyclopedia of Magical Plants, among many others.
Although a few old books...