bored in halifax

so yea, im really really bored, and i was thinking about those traid films like infernal affairs and i came up with an idea. im gonna have 3 guys around a table arging about something and it only takes place in one room. then the camera goes outside of the room and u hear 2 gun shots leaving only 1 survivor and i kinda ended it there. anyways here are some of my concepts, any suggestions to make it better? (visually and story wise).

thanx,
Aaron