Beyond Reach / Arnima - Lost and Damned (The Elder Scrolls 5: Skyrim)

In the neophyte. DLC "Beyond Reach / Arnim" can not complete the quest "Lost and Damned".
There it is necessary to find a ring in the Ruined Hall. The whole hall went around all the items and took what is needed, and the marker points to an empty corpse.

Who faced help!