This book contains 18 chapters and 147 pages.
 
Her sister vanished from a locked apartment. Only one door was ever found.
 
But something doesn’t add up.
 
As she retraces the final hours, cracks begin to form in the alibis, the architecture, and her own memory. The building holds secrets no blueprint ever showed—and one door no one was supposed to see.
 
No One Saw the Second Door is a slow-burning, psychologically immersive mystery about silence, perception, and the truths we miss when we trust too quickly. With layered tension and cinematic atmosphere, this story invites you to question everything—especially what’s missing.
 
For readers who crave intelligent suspense, emotional depth, and a mystery that lingers long after the last page.
Mystery.