I posted a question about this case some years ago, but didn’t get an answer. Here’s a link to the “latest” info I could find.
Long and short: William Bergen Greene’s conviction was overturned by Federal Judge Marsha Pechman, after having been upheld by the Washington State Supeme Court. Apparently she thought that his Multiple Personality Disorder defense was not treated with enough seriousness–although I confess I have not read her actual opinion on why she overturned it.
It’s been several years–any news??? I tried looking myself, but the was the most up-to-date info I could find.