UESP Forums

Went to swampy cave previously, randomly killed most trolls.

Later returned once i started the fighter guild quest, killed last troll. Was told to make sure what happened to the missing people. Went to cave with green arrow, there is nothing there to see, searched the skeletons and trolls but nada. How can i complete this, or have i screwed it up? I have already done a million quests so cannot go back to before i went into swampy cave for first time!

hmmm. did you kill the will 'o the wisp's outside? they're part of the quest. aside from that idk.

See the "Notes" part of the wiki entry:
http://www.uesp.net/wiki/Oblivion:Myste ... %27s_Watch

If you're on xbox, try the patch, not sure if it will fix it or not.

I have the same problem. Apparently there is a patch for this.