[quote=Mizuho]
Hmmm... Here's a thought that I had.I think that once the murderer has picked a victim, they should talk about it with the GM, maybe even roleplay it with each other on a piratepad or something. You know, because victims will react, and possibly kill the person before they get killed, or something goes wrong or whatever. It'll help determine the clues and stuff too~I dunnoMight be too complicated though
[/quote]

I remember two RP's that did murder exactly this. I'll vouch for the idea, as long as it isn't done over RPG PMs. IM/Shared documents are better for it.