The missing locket

I woke up this morning with the sun shining in my eyes. There was a big gust of wind and my blanket flew off. I started getting ready for school when I noticed something weird.  I felt like I was being watched. I look around and suddenly a man in a black mask sprinted past me. I ran to a chest in my room that had a realllllllyyyyyy valuable locket in it. The locket (necklace) has been passed on generation by generation, but when I went through the chest to find my secret compartment it wasn’t there! WHERE DID IT GO!!!!!! I shouted.