Chapter 13 - The Second Key
By 4:00 AM, the estate was under complete fortress-grade lockdown. Steel shutters sealed the ground-floor windows, and the mansion's private server room hummed under the weight of Marcus’s forensic team analyzing the radio interception.
Marcus sat behind three glowing monitors in the basement command post, his expression grimmer than Daniel had ever seen it.
"The intercom in Noah's room wasn't receiving a standard radio wave, Daniel," Marcus said, spinning the screen toward him. "That vintage intercom unit has a vacuum tube amplifier Claire replaced before she died. She didn't put an original part in there. She inserted an encrypted military-grade transponder."
Daniel felt the floor beneath him shift. "Claire put that in Noah's nursery? Why?"
"Because whoever transmitted that voice wasn't outside in the woods with a walkie-talkie," Marcus continued, clicking a key to bring up a local frequency map. "The signal originated from within a five-hundred-meter radius. More specifically... from an underground utility line tied directly to this estate."
"That's impossible. We swept the tunnels under the wine cellar after the catering incident last year!"
"We swept the foundation walls," Marcus corrected grimly. "We didn't sweep the old municipal drainage aqueduct that runs three stories beneath the carriage house. But that’s not the worst part, Daniel."
Marcus pulled a heavy evidence pouch from a desk drawer and dropped it onto the glass table. Inside lay the brass skeleton key recovered from the infiltrator who had brought the poisoned cake twelve months ago.
Beside it, Marcus dropped a second object: an identical brass key, pristine, without a scratch, tagged with an evidence label from the Metropolitan Safety Deposit Vaults.
"Where did you get that?" Daniel whispered.
"I have a contact in the anti-fraud division downtown," Marcus said, leaning in. "Three hours ago, while you were hosting Noah’s birthday party, someone walked into the Vaults on 5th Avenue. She had Claire’s original biometric signature, Claire’s retina pattern, and Claire’s private access password."
Daniel stared at the second key. His breath came shallow and fast. "Claire's retina? Marcus, Claire died in a car fire! Her body was identified by dental records!"
"Identified by a coroner who retired to the Cayman Islands two months later," Marcus pointed out ruthlessly. "Daniel, you have to hear me. That woman at the vault signed the logbook in Claire’s handwriting. She withdrew a single steel cylinder from deposit box 409—a box registered twenty-four hours before Claire’s supposed car crash."
"What was in the cylinder?"
"The bank doesn't inventory private contents. But the teller reported something that made my blood run cold." Marcus leaned back, his eyes locked onto Daniel's. "The woman was wearing a black veil. When she signed the receipt, she left an instruction for the courier."
"What instruction?"
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"She told the courier: *'Deliver the rest of the antidote to the mansion before Noah's seventh birthday ends. His father doesn't know what was actually in the cake.'*"
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