What if a signal from forty light-years away knew what humanity had already done?

At 2:17 in the morning, an impossible transmission reaches a remote observatory. It is not random cosmic noise. It repeats with mathematical precision, contains patterns that resemble language, and appears to be coming from the direction of TRAPPIST-1.

Arjun Mehta and Mira Sen begin investigating the signal. But the deeper they look, the stranger it becomes.

Independent observatories confirm the transmission. Its timing produces an unexplained forty-one-second anomaly. The message appears to respond to questions that were never sent—and then someone, or something, changes the transmission after it has already been received.

Soon, the investigation expands beyond astronomy.

A biological sequence emerges from the signal. Hidden archives reveal a secret project called JANUS. Evidence connects the mystery to distant worlds, artificial intelligence, genetic information, Mars, and a future that humanity was never supposed to see.

And the most disturbing discovery may be this:

The signal is not simply coming from another civilization.

It may already know us.

As the investigators race to understand who—or what—sent the message, they are forced to confront questions about time, memory, identity, human evolution, and the future of civilization.

*The Signal from TRAPPIST-1* is a science-fiction mystery thriller combining extraterrestrial signals, deep-space mystery, scientific puzzles, secret experiments, cosmic suspense, and a high-stakes question about humanity's place in the universe.