Threshold Signal: Book One of the Threshold Sequence

By Todd Kirton

Now a complete 5-book series.

There was never a signal. Only a whisper. Not meant for us.

Commander Elara Myles vanished beneath Triton's ice while chasing a mysterious anomaly. Her final transmission didn't call for help-it warned of something ancient. Something waiting. Not a message, but a key. And Earth was never supposed to find it.

Now, a rogue crew defies orders and follows the signal to Kepler-22b, a planet cloaked in silence and secrets. What they discover isn't a beacon. It's a system-vast, intelligent, and already listening.

Threshold Signal is the gripping first book in The Threshold Sequence, a cerebral, atmospheric sci-fi saga exploring alien logic, rogue explorers, and the consequences of unintended contact.

We weren't the message.
We were the keyhole.
And something just turned it.

• Format: Paperback
• Language: English
• ISBN: B0F9HTXZ2Y
• ISBN13: 9798284545225
• Release Date: May 2025
• Publisher: Independently Published
• Length: 38 Pages
• Weight: 0.14 lbs.
• Dimensions: 0.1" x 6.0" x 9.0"