Casper The Unfriendly Ghost

I was engaging in some jolly co-op at the Undead Parish recently, and at one point I was summoned by a player who I helped to clear out most of the church. He went up in the direction of Lautrec's cell while I waited in the spot where we'd killed the channeller.

The Balder knight up near Lautrec was already dead, so I was puzzled when I heard sounds of combat coming from the host's direction - there had been no invasion. I ran up there to find the host fighting a ghost - as in, the same as the ghosts of other players you glimpse while playing online, the ones that appear briefly before fading away.

The ghost didn't fade in or out like normal ghosts, and the host was fighting him, each of them being able to physically damage the other. I couldn't hurt the ghost, however, and he couldn't hurt me. There had been no invasion warning (text or sound effect) and when the host finally killed the ghost, there was no text then either.

It seems like the ghost was an invader who invaded the host's world but somehow the invader and I were in two separate ones, even though the connection between the host and I was fine, with no odd happenings apart from this one involving the ghost invader.

Anyone else experienced this or something similar?

It was lautrec, you couldn't hurt him, because he is a valuable npc in the hosts world.

The ghost is Lautrec but you cannot interact with him at all in another players world, the only possible thing you could have done is block him in his cell while the host attacked..

Ah, of course. I knew that was how you saw NPCs in a host's world, but it never occurred to me that the ghost attacking the host was Lautrec. Thanks, guys.

"Another mystery solved! Great work, gang! Looks like the 'ghost' was really Old Man Lautrec trying to scare people away from the treasure buried underneath the Undead Parish church!"

"And I'd have gotten away with it too, if it wasn't for you pesky, meddling Chosen Undead!"

"Dark Souls TWOOOOOOOOOOOOOOO"