Rules for Mysteries

Hey guys i thought that this might be a fun idea to try out. You all can do this as well.

Someone can make a mystery story if you will. this can be done in 2 ways

1.Someone writes out the whole story with as much detail as possible to try to figure out who the murderer/culprit is.

2.Is do a vague story and allow players to ask questions to gain "Clues" to figure it out.

Either way i think would be a fun idea. So let the ideas flow and see who you can outsmart.