Chapter 31 - Discovering a hidden vintage iron key inside an old family safe along with a cryptic letter hinting at a surviving brother tonight.
Late that evening, while the children slept peacefully in their rooms, Luka and Maya reviewed old family documents inside the library safe.
Tucked behind an ancient leather-bound ledger, Luka's fingers brushed against a secret compartment at the back of the steel safe.
A small spring mechanism clicked open, revealing a velvet-lined box containing a heavy vintage iron key and a sealed yellowed letter.
The letter was addressed to Arthur Sterling, written in dark black ink thirty years ago by a former federal maritime investigator.
"Arthur, if you are reading this, your twin brother Julian did not perish in the Atlantic shipwreck as the cartel reported," the letter read.
"He was taken to a private facility in Geneva, where he has been kept alive under a false identity to protect your hidden codes."
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Tucked inside the envelope was a modern satellite coordinate map marking a remote location in the Swiss Alps, updated three days ago.
Luka stared at the coordinates, his eyes narrowing as Maya's smartphone suddenly chimed with an encrypted incoming video signal from Switzerland.
