“Hey!” a low voice called out. “Down there!”
At least that’s what I thought the voice said. The weird echoes in the tunnels bounced back on each other and garbled everything together, making it hard to figure out the exact words, much less who the voice belonged to. Still, I couldn’t help but think that my dire prediction from earlier had already come true and that Covington was here. That he knew about the tunnels and was going to use them to sneak into the Bunker and steal artifacts, specifically the jewelry box.
A series of loud, steady thump-thump-thump-thumps rang out, confirming my suspicions. I might not have been able to make out the garbled words, but I recognized those sounds. Footsteps, and more than one set.
Other people were in the tunnels—and they were coming this way.