A Rambling Tale
Your trainer dungeon did NOT go as planned.
The first bad move was hiring trainers from the assassin's guild. That's on you. But you told that one customer no live spells and she did it anyway. Really, they should have known better than to expect your basement to be structurally sound.
Either way, the guards are snooping around because of "unsafe working conditions" and "negligent homicide." Pfft, jargon and buzzwords for a good time, amirite?
Shit. No, you should take this seriously, you're definitely guilty of a lot of things.