This concept is SO scary? Any media I've ever consumed about the catacombs is very terrifying to me lol. I think that it follows four teens gives it the perfect amount of excitement factor - I'm sure that just as things are getting dire with one person, it'll switch to another POV. It also opens up opportunities for not everyone to make it out alive, or not everyone to have the same (good) motives. I'm interested to see where it goes!