i desperately need help. i can't get into the back room of the copper coronet no matter what i try. i remember talking to lehtinan or whatever earlier, but now hes gone and the back rooms are still locked with an unpickable lock. every single guide everywhere says just talk to lehtinan, but he's gone. is this a glitch? is my game effed? it happened before when i was trying to get into the back rooms to get the little kids teddy bear but i couldnt so i said whatever, but now jan left my party and the only way to complete the quest is to go to talk to someone in the back rooms. WHICH IS IMPOSSIBLE.
so is jan now gone forever? is there any kind of workaround or something? some kind of cheat where i can put the key or whatever in my inventory? cause this is really, REALLY starting to piss me off.
someone somewhere said something about going through the slaver stockade, but there's no door there. so wtf am i supposed to do?

through the slaver stockade ( / ship) there's an entrance to a section of sewers. Through those sewers, to the top left of the map, there's an entrance to the back rooms of the copper coronet.

You could also enable cheats and use the CluaConsole to spawn Lehtinan (but I'm not sure what his creature code is) - he might just be wandering somewhere he's not supposed to be though (was there a fight that might have had people running?). Normally he moves around up near the bar area - maybe he's in the kitchen?

funny that you think i'd make this topic without looking in the kitchen first...but no i looked EVERYWHERE inside the copper coronet. he is not there. i killed the bouncers thinking that'd let me in, but he had disappeared before that fight.
and like i said, i tried the slaver stockade. there is no door; there is no entrance to sewers. all there is is a door that says its blocked from the other side.
*EDIT*
yep, just checked again to make sure.
there is absolutely no accessible entrance to anything in the slaver stockade. there are stairs but they're blocked from the other side.
i have no idea what you're talking about.

As mentioned, just enable cheats and try to spawn the bugger is probably the easiest solution.

CLUAConsole:CreateCreature("LEHTIN")

You could also try...

CLUAConsole:EnableCheatKeys()

and CTRL+J to teleport each character to your mouse cursor (put it behind the door), but this might not advance the quest if you're required to talk to Lehtinan.