Oh yes, I can relate. A few years back I lived in an apartment complex. There were locked doors on each end of the building, but all of the outside locks on all four buildings were keyed the same. I lived on the THIRD (top) floor of the building. My apartment, as well as my neighbor's across the hall, were both robbed during the day while we were at work. I lost ALL of my jewelry and he lost an entire coin collection. The police said it had to be one of our neighbors who knew when we left and came back each day. How heartwarming to know that you're being stalked by a thief. Neither of us ever located anything... hope you can at least find out who did this to you.