That's the game I remember. There was an article in German mag "AmigaMagazin". Maybe more information in the article. I can't remember in which issue the article was. Maybe I will check it next weekend.
You can find a demo-version in Aminet:
http://aminet.net/search?name=Murder_&path[]=game/demo.
Are you sure that's the full version or just the same demo like in aminet?
BTW I couldn't start the game yet. I get the following error: Unknown error during object attachment.
What's wrong?