Board Thread:Skyrim/@comment-104.52.112.106-20150728030701

After I completed both quests Sibbi was involved in, I was distrubuting The Warmth of Maras out to Riften Citizens, including all of the Black-Briars, after giving one to Maven, Hemming, and Ingun, I went to give one to Sibbi, but He was missing from His cell. His stuff still there, everything. I never killed him, He never appeared out in the City, I never found him dead, I never saw him wandering, He's just... gone. Anyone got any ideas or theories on what happened? 