Length43m
About this audiobook
In the quiet hours before dawn, a signal begins to appear—faint, rhythmic, and impossible to explain. When young systems analyst Daniel Reyes first detects the anomaly buried deep within global communication networks, he assumes it’s nothing more than corrupted data. But the pattern grows stronger, repeating across satellites, radio frequencies, and even private servers. Soon, it becomes clear: this is no accident.
As governments scramble to contain the discovery, Daniel teams up with cryptographer Mara Lin to uncover the truth behind what they begin calling The Threshold Signal. The message seems to originate from nowhere—and everywhere at once—hinting at a boundary humanity has unknowingly crossed.
Powerful organizations want it others believe it could unlock knowledge capable of changing civilization forever. With time running out and the signal growing louder, Daniel and Mara must decide whether humanity is ready to face what lies beyond the threshold.
Audiobook details
Rating★★★ 3.0 (1)
GenreTechnology
Length43 mins
Narrated byListen with 1,000+ voices
FormateBook with Audio
Publish dateMar 7, 2026
LanguageEnglish
The Secret in the ArchiveJose Gabriel45m3.0 (1) Only with Ultra
The Quiet Voice of Willow CreekJose Gabriel42m3.0 (1) Only with Ultra
The Journal of Lucas WalkerJose Gabriel41m Only with Ultra
The Heart Tree’s ChosenJose Gabriel43m3.0 (1) Only with Ultra
Run Through Iron CityJose Gabriel44m Only with Ultra
Where the River Sings at NightJose Gabriel40m3.0 (1) Only with Ultra
The Truth of Maple StreetJose Gabriel46m Only with Ultra
The City That Learned to ThinkJose Gabriel49m3.0 (1) Only with Ultra
The Department of Questionable MindsJose Gabriel43m4.0 (1) Only with Ultra
The Weight of Quiet RoomsJose Gabriel49m Only with Ultra
The Quiet Architecture of PowerJose Gabriel46m Only with Ultra
The Code That Watched BackJose Gabriel45m Only with Ultra
The American frontierJose Gabriel45m3.5 (2) Only with Ultra
The Ash That BreathesJose Gabriel1h3.0 (1) Only with Ultra
The Forest That Learned to BreatheJose Gabriel46m Only with Ultra
The Heat Under AshfordJose Gabriel46m Only with Ultra
Beneath the Quiet EarthJose Gabriel46m Only with Ultra
When the Forest WarmsJose Gabriel46m Only with Ultra
Bound by Silver LightJose Gabriel42m Only with Ultra
The Collected WorksNikola Tesla50h 9m4.3 (2.1K)$1 · $0.00
Never Lost AgainBill Kilday10h 1m4.4 (805)$29 · $0.00
How the Internet HappenedBrian McCullough13h 28m4.3 (2.7K)$23 · $0.00
Collected Writings of Nikola TeslaNikola Tesla, Thomas Commerford Martin21h 50m4.3 (1.7K)$1 · $0.00
Just AspireAjai Chowdhry9h 13m4.4 (260)$29 · $0.00
The Little Book of AliensAdam Frank8h 20m4.3 (1.3K)$26 · $0.00
The inventions, researches and writings of Nikola Tesla (Annotated)Thomas Commerford Martin16h 59m4.3 (1.3K)$2 · $0.00
KargilV.P. Malik15h 18m4.3 (2K)$24 · $0.00
Fire on the HorizonTom Shroder, John Konrad8h 23m4.3 (858)$26 · $0.00
The Smell of Kerosene (Annotated)National Aeronautics and Space Administration, Donald L. Mallick, Peter W. Merlin11h 32m4.3 (523)$2 · $0.00
The Boy Who Harnessed the WindWilliam Kamkwamba, Bryan Mealer10h 5m4.2 (78.9K)$29 · $0.00
Mars Rover CuriosityRob Manning, William L. Simon7h 43m4.3 (1.7K)$20
Across the Airless WildsEarl Swift10h 8m4.3 (1.3K)$29 · $0.00
Console WarsBlake J. Harris20h 41m4.2 (13.7K)$46 · $0.00
Improvised Munitions HandbookU.S. Department of Defense4h 50m4.3 (1.6K)$0.99 · $0.00
Escaping GravityLori Garver10h 54m4.2 (2.2K)$20 · $0.00
Wireless WarsJonathan Pelson8h 2m4.3 (418)$20 · $0.00
The Forest UndergroundTony Rinaudo6h 22m4.5 (73)$17
Atoms and AshesSerhii Plokhy12h 8m4.2 (2.6K)$23
Let There Be WaterSeth M. Siegel8h 36m4.2 (2.3K)$20 · $0.00
You may also like
Advantage India : From Challenge to OppourtunityA.P.J Abdul Kalam, Srijan Pal Singh6h 9m4.5 (252)$8
Planet GoogleRandall Stross7h 44m3.7 (1.8K)$17 · $0.00
The Smoke RingLarry Niven8h 48m4.0 (8.7K)$17
The AI ConEmily M. Bender, Alex Hanna7h 51m3.7 (1.7K)$26 · $0.00
No Room for Small DreamsShimon Peres7h 23m4.5 (2.5K)$24 · $0.00
Cool ItBjorn Lomborg6h 15m3.9 (1.7K)$20
Successful Self-Publishing: How to Self-Publish and Market Your BookJoanna Penn3h 23m4.4 (2.9K) Only with Ultra
BauhausMichael Siebenbrodt, Lutz Schöbe8h 28m4.3 (282)$18 · $0.00
The Integral TreesLarry Niven7h 40m3.9 (10.4K)$20
Bound for CanaanFergus Bordewich5h 30m4.3 (1.8K)$24 · $0.00
The Techno-Optimist ManifestoMarc Andreessen37m4.3 (24) Only with Ultra
Cutting the CordMartin Cooper8h 48m4.0 (98)$20 · $0.00
Engage with ImpactNicholas Bruneau4h 22m4.8 (14)Free
The Maverick EffectHarish Mehta9h 52m4.4 (185)$29 · $0.00
Englisch lernen Audio - Die Bucht von San FranciscoRita Forbes, Michael Pilewski1h 1m$11
Einstein's ShadowSeth Fletcher7h 28m3.9 (571)$24 · $0.00
History of the American Foreign Missions to the Oriental Churches (Annotated)Rufus Anderson23h 44m$2 · $0.00
Billions at PlayNJ Ayuk10h 34m4.0 (176)$35
The EndangeredsPhilippe Cousteau, Austin Aslan5h 59m4.0 (92)$24 · $0.00
Mars LifeBen Bova12h3.5 (1.1K)$23