I'm fairly convinced you're not exactly acting in the best interests of pro-town now.
1. You're not dead, detective has no reason to trust you.
2. It's funny how two of three people investigated just happen to be dead and have their roles revealed to all...
3. It's also funny how this one person just happened to be on the suspect list that's still unconfirmed.
4. This evidence is only coming to light now after the person I believe to be mafian(rrhunt) narrowly escapes from death.
At this point, while I would prefer them to just relay their findings to us, there is a method to the madness. They don't want to reveal any names, because that would eliminate names from the "Who is the detective list" which the mafians would no doubt be interested in. Now there is no reason they shouldn't relay who they've discovered is mafian however. But if they haven't discovered any mafians, they may be hiding for a very good reason.