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if Drinck himself is the murderer, then he doesn't need to go anywhere) or he might not have gone out today (if he's a Mafia member), or he might have already returned home... in the 6th game, it was like that, at least with me, although according to my role, I shouldn't have left the house, I worked remotely).
Added 8 minutes later
Gur, it's written in the role descriptions) only the Archangel recruits, while the Guardian and Seraphim kill.