
by Dan Brown · Umbriel · tapa blanda · ISBN 9788489367012

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«La fortaleza digital» is the techno-thriller novel by Dan Brown, published by Umbriel in paperback (448 pages, in Spanish).
Cryptographer Susan Fletcher must confront a code that even the NSA's supercomputer cannot crack. Her fiancé, David, travels to Seville following the only clue and becomes the target of a killer. Inside the agency, a night of deceit and crime will test Susan.
Original title: «Digital Fortress»; the work was originally published in 1998. Translation by Eduardo García Murillo.
For readers of techno-thrillers and espionage, with plots of codes and secret services.

Daniel Gerhard Brown is an American writer best known for his thriller novels, particularly the Robert Langdon series Angels & Demons (2000), The Da Vinci Code (2003), The Lost Symbol (2009), Inferno (2013), Origin (2017) and The Secret of Secrets (2025). His novels are treasure hunts that usually take place over a 24-hour period and center on recurring themes of cryptography, art, and conspiracy theories.

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