I'd consider this BJ, always enjoyed murder mystery nights.
Would this be a commercial, actors, one or one where the participants all play a role? (doesn't change my interest in it either way)
location: preference north west (can't see it being any further north lol)
price: depends on venue, there's one coming up local to me at £25 just for the murder/dinner or £69 for the dinner, bed and breakfast - I reckon that's pretty good value
sharing: prepared to share, preferably with someone I know, but then an unfamiliar face is a friend I've not made yet