Mark stepped out of the guest room and walked rapidly down the stairs.
He returned a moment later carrying a heavy steel sledgehammer from his work truck.
Clara put her hands up in utter disbelief as Mark raised the heavy tool.
Clara: Mark, you are destroying our beautiful house over a child's foolish imagination!
Mark: If there is nothing behind this wall, I will repair the drywall myself.
Clara: Stop this crazy behavior right now!
Mark: Stand back against the hall wall, both of you.
Mark swung the heavy sledgehammer forward with maximum force against the white panel.
The bright steel head smashed directly into the center of the fresh drywall panel.
A loud crashing sound echoed through the entire upper floor of the suburban home.
White dust shot into the bright air as large chunks of plaster fell away.
Mark raised the hammer again and swung it violently into the breaking wall board.
More dry wall collapsed inward, exposing a hollow cavity hidden deep within the structure.
The dust swirled inside the room under the bright natural daylight from the window.
Mark wiped his sweaty forehead with the back of his grey work sleeve.
He reached into his pocket and pulled out his bright LED work flashlight.
He pointed the strong white beam directly through the gaping hole in the wall.
The light reflected off a cold metallic surface deep inside the hollow space.
Mark leaned forward carefully to get a clearer view through the dusty opening.
A massive iron vault door sat embedded deep within the reinforced home wall.
Thick steel hinges bound the heavy iron frame to massive steel support beams.
Mark: What on earth is this doing inside my house?!
Clara: I have no idea what that is, Mark!
Lily: She lied to you, Dad!
Mark: Clara, this wall was built only three months ago during your remodel!
Clara stood frozen near the open doorway with her eyes darting toward the stairs.
Mark lowered the heavy sledgehammer to the floor while staring at the iron vault.
The heavy metal structure looked like a bank vault from a high security facility.
A glowing digital keypad sat right next to a heavy brass turning wheel lock.
Mark took a step closer to inspect the polished surface of the keypad lock.
The digital display showed a glowing green indicator light blinking silently in the dark.
Someone had activated the inner locking mechanism from inside the vault very recently.
Mark turned around slowly to face his wife under the bright ceiling lighting.
Mark: Clara, give me the combination code for this lock right now.
Clara: I don't know any code, I swear to you!
Mark: You hired the contractors while I was away on that week project!
Clara: They were just fixing the insulation behind the outer guest bedroom wall!
Lily: She goes in there at night when you are asleep, Dad!
Mark's heart hammered wildly against his chest as he processed his daughter's words.
He stepped right up to Clara until he stood directly in front of her.
Her face had turned completely pale under the bright natural room light.
A sudden heavy metallic clanking sound reverberated from inside the iron vault door.