Here's the thing, the Don got their third Investigation just now. They are going to hit either me, KOTD, or the Mayor. They know us now so they probably guessed at the Mayor. The Doctor can save one of us hopefully. If I read the Rules correctly the Mayor and I get Two Lynches, KOTD has one and the Town gets one. We could get three hits on Night 4 and two on Night 5. But of course the Mafia is going to try and get one of us we need to keep them guessing on who the Doctor will protect.