Daniel is missing.
A municipal systems engineer disappears without a clean explanation.
Mara Ellison Thrillers · Book one
Compliance auditor Mara Ellison knows her brother is gone. The systems around his work insist he is still there.
Read the English Kindle edition →A near-future technological thriller. No reviews, rankings or outcomes are claimed.

A municipal systems engineer disappears without a clean explanation.
The same pattern returns at 03:17, precise enough to look normal.
Every clean record puts more distance between institutional truth and lived reality.
Systems mystery · human stakes
Mara’s search cuts through Chicago infrastructure, corporate controls and a workforce algorithm whose records are cleaner than reality.
Every answer widens the conspiracy. Every shortcut risks turning Mara into the next person the system quietly removes.
The technology is grounded in human choices, loyalties and risk—not gadget spectacle.
Signal Black
The central mystery reaches a complete resolution while opening the wider world of the Mara Ellison Thrillers.
The English Kindle ebook is available on Amazon. Spanish and German editions remain in editorial preparation.