Apparently I locked myself out of being able to peacefully resolve the Headless Nick quest, simply because
at the very beginning of the game I failed to convince Gallagher to go to the other guy's stage. It seems to be impossible for me to get the talking head with Reginald around.
That's fine by me, I don't mind failing quests, but I think Larian should give us the option to actually fail. As far as I can tell this quest will remain in my quest log unless
I kill everyone at the fair.
I even tried killing Headless Nick and Lilian, but it didn't work. Please add an actual failstate or more ways to solve this quest, as I don't feel like killing half of Cyseal just to get this quest out of my log.