Well I found the geocache prison this cache is listed in today. Unfortunately yours did not make it out alive. I picked up 11 trackables from the cache and did not leave any behind. On all those that I did pick up other cachers had discovered them in the cache this one is listed in. Since no one has discovered it and it is not currently in the box I figure it may have never been there to begin with. There were 3 like this. Might explain part of the reason for the cache owner of this cache "putting" 20 trackables in the cache when it was published.