The Empty Box

I opened the door thinking my secret pearl was behind it. There was nothing but a little white mouse squeeking. I sighed waiting to find my mum. I started crying about the pearl, because if I didn't get it soon I would die. But then my mum appeared with the most excited face I've ever seen."Mum are you okay?" I said,"Yes!" she replied. She had a box ready to be opened. She opened it, but to my surprise the box was empty. "Mum", I whimpered "where is the pearl?" "But it's in there, Tim, it is in there believe me."