[@The Mighty Hero]

Are the guards still conscious after the 3 attacks?
My post requires this information.
Since if they are not an visibly appear conscious, then Kethan will tap one of the guards on the head with his staff-cane for more nonlethal damage.

Hopefully enough to knock them unconscious as he passes by and heads to the area demarcated on the map given from earlier were the Mayor's study would be. Looking for records of his shady back deals as proof. Since being Lawful neutral, he'd make sure he has some ledger or something to prove to the courts this coupe was needed. Is such an area existent or must we do a search?

Also note passive investigation of 17 from 10 + 5 + 2 such information is needed to make sense of the map/room.

If both are unconscious (or appear to be to the characters), I'll have Kethan do a Medicine check to check for consciousness. Then unless we are still in a combat encounter freely move towards the corridor and use Thaumaturgy to open the door. Because he's so used to using that cantrip to enter closed doors. I'd imagine him carrying a pile of books and walking through automatic doors.