Believe the watcher (BTW)

 
4
The guilty that the watcher had, was it mafia? Is the watcher actually legitimate? The existence of stalker means that watcher dying during the night will happen more than you know. Have fun, hopefully it isn't mafia sided.
about 12 years
Having a Jan in setup with no reveal seems kinda redundant but otherwise, it looks fairly balanced (on theory at least). Can't wait to test it out! :)