⚡️ 3-Day Flash Sale – Just 99¢! ⚡️



“The signal wasn’t from space. It was a warning.”



When a SETI analyst decodes a mysterious transmission, he uncovers a secret buried since the Cold War — one that could erase humanity’s past to protect its future.



The Umbra Signal is a Cipherlock™ science fiction thriller blending quantum mystery, espionage, and time-bending suspense into one cinematic experience.



Readers of Blake Crouch, A.G. Riddle, and Michael Crichton are calling it “smart, cinematic, and hauntingly original.”



📖 580 pages of immersive, high-concept storytelling.
💥 Only 99¢ until October 16!



Get it here:
👉 Amazon (U.S.)
👉 Amazon (U.K.)