NNV - 4 (Oven, AstarothSc2VP, Olam Hével, Silent Flower).
Added 1 minute ago
But seriously, the main suspects, besides Revnya, are Ment and Heroist. The first could be a Priest/Warlord or a Mafia member, the second could be a Knight/Warlord or a Fire Mage/Bard. Ideally, Alexigl should question them again to be sure of their allegiance.
Added 3 minutes ago
Oven, as already mentioned, is very passive, considering the previous game.