[Lava]

I'll investigate this and fix it. Meanwhile, you may just try summoning the Baron.
Use the console to adjust things locally -- wiki usually includes .cre files (https://baldursgate.fandom.com/wiki/Baron_Metrich) -- which is PLMETR01 for your dead character. 

https://gibberlings3.github.io/iesdp/app...a/bgee.htm