Fuck reoccurring dreams, especially if they're creepy. I feel you OP, your friend also having the same dream makes it even creepier. Especially the part about having a different perspective, maybe other people you see in your dreams are dreaming from other parts of the world?
I used to have one reoccuring for a few nights myself, but it wasn't as scary as yours, just weird. I'd always start out in the same mall, and the further in I went the more strange and abstract it got. At some point the floors would get sandy and it'd slowly turn into a desert, the room growing wider and taller until it was too far to see the edges of, with the shops growing farther and farther apart. Spent many nights exploring the mall, even tried walking out into the desert but after a while the shops would end up being miles apart so I gave up.