That happened to us a few years ago. We had our Class C parked at an RV lot that was gated and fenced in. Even had the barbed wire around the top of the fencing. One night it was so foggy that you couldn't see a hand in front of your face, and the next day we got a call from the RV lot owners saying our RV had been broken into, along with several others. They broke the window in the door to get in. Nothing was stolen and no damage inside thank goodness, so replacing the glass was all we had to do. But still!!!
Kenny n Karen
TV: 2007 Chevy Silverado 3500 DRW - named Alice
RV: 2012 XLR Thunderbolt 35x12 - named Thor