You don't really want to try to break open the secret door, do you? It's made of stone!
Max does need to see a physician (or anyone with the 'heal wounds' skill, like a herbalist or pharmacist) before he can start to heal naturally, but he is stable at the moment. He's classed as 'heavily wounded' since he has less than 3 wounds left, while Heinrich is 'lightly wounded.' But it's not possible to find someone to treat him at this time of night, unless you already knew where to go.
You could report to the nearest guard barracks, if you wanted, since that stays open all night.
Or you could indeed go look for the building above the demon room.
You've all had a busy day and will be tired though.
Rufus, when we entered the Baumann tavern did nobody wonder that Boris was missing?
Anyone who cared enough to notice he wasn't with you would assume he'd passed out drunk somewhere.
Didn't Boris just get in over his head
Boooooo!