[Enid]

The culprit has to be someone already living on The Square. I had a thought Pat may have had something to do with planting the ring in Janine's house. She was staying with her for a while and probably had a spare key. She was also "away" when Archie was killed. She has every reason to be involved in this as Peggy is her best friend. Would be great if they had paired up together all this time. Then again, Peggy could have planted the ring as well. Remember when she visited Pat that day? She could've easily stolen a key.