I'm a little lost at 3 potions and no clue where to go next. Dumping potion into the pit does nothing, there's no more research at the library, and everything seems to be stuck in a loop. I've opened all the scenes I can, and have some indication that I should invite a friend to the stables (but no option to do so) that I should find new potions (but no way to do so, all potion trials at the cauldron simply explode) and I'm stuck.
Is this just the demo, or am I missing something obvious