Name That Trauma:: Rob M. on a Dark Tunnel & a Bedridden Investigator

I'm trying to remember the name of a film.

An investigator makes some rounds talking to various people about the disappearance or death of a woman… maybe? He begins questioning a man in a bar about a mishap in an abandoned warehouse. Some weird room there and power loss. The second interview is with a kid that sketches weird stuff and pretty much keeps to his room. The third is a rich dude that ultimately winds up killing himself. Something about a child or ghost. Ultimately, there is something about a deep dark tunnel that a kid with fear of confined spaces gets lured into… We arrive at a conclusion where the investigator is bedridden in a hospital. The people he has interviewed are all hospital workers.

Thanks,
Rob M.