A Box And A Ring

Elizabeth watched until they vanished behind a corner. They look like normal people, but why do I have this strange feeling that they are dangerous?

A middle-aged man wearing a white long gown pushed the door open and walked in. "What are you looking at, Elizabeth?"

"Nothing. Just two strangers." She turned away from the window to look at the man. "You said you found something that belonged to Father, Uncle. He had been missing ever since he fought Alex."

The man raised his hand, in which a small ice blue box appeared. It then flew towards Elizabeth. "I found it at an auction, but I'm pretty sure it's his. It's sealed by magic, and only your blood can open it. That's why I wrote asking you to come here."

Elizabeth caught the box with shaking hands. She took a deep breath and opened it carefully.

Inside the box she found a ring with a sapphire.