It's pretty much Gonjiam. The only likeable character was Jaemin (I think that was his name. The actual ghost hunter with brains)
I still don't understand why they all came together? They seemed to not actually know each other but did? It's all a bit weird and up in the air for me.

While I did like the movie, them fighting at at each other's throats CONSTANTLY took so much away from the movie for me.. I would under if that happened out of fear but even from the beginning the main dude was a asshole and annoying as hell.

I don't understand the reasoning behind letting him outside to see the headstone and show no bars on the door either. That confused me..

I felt more sympathy towards all the trapped ghost. I really wonder if it would have made a difference if they attempted to unlock doors/cages. Cuz can you imagine having ghosts back you up against the main thing keeping you all there? Lol but I get it. It's just a movie and I'm looking waaayyyy to much into it. But still.

With Halloween coming up, this would be a great movie to add to your list.