@RaNDM G He's messaged many of us with a list of possible suspects. As well, we have some accusations, with some basic evidence focusing towards him.
It really is a Xanatos Gambit. If he's the spy, we have info to work off of, if he's the killer, we win. If he is not either, and the spy isn't killed, we will probably get the identity of the killer. And if the real spy is killed and is one of the people that has has been feeding us, we will have information to work off of.