1Introduction
9Footprints on Iron Street
2The Letter in the Attic
10Voices from the Basement
3A Clock Stops at Midnight
11The Forgotten Safe
4Whispers in the Courthouse
12A Code in Plain Sight
5The Locksmith’s Ledger
13The Fourth Key Turns
6Shadows Behind the Mirror
14Trapdoor Beneath the Library
7The Vanishing Witness
15Truth Buried in Silence
8Blueprints and Betrayals
16The Fifth Key Revealed
