During a restoration of Silver Peak's historic opera house, where luminaries such as Buffalo Bill and Sarah Bernhardt graced the stage in its heyday, workers discover an old, ornate pedestal safe that's been sealed in the walls. How long has it been there? And why would someone hide it in the opera house? Sadie can't wait to examine the rare antique to discover what treasures might be inside. If the safe is as valuable as she believes it to be, it could be sold to subsidize the opera house's restoration. but when threatening notes arrive, Sadie must race the clock to unlock its secrets before it's too late.