I’ve been telling stories for a long time, but Atlantis: A Novel of Time Travel and Alternate Worlds holds a special place for me. It’s the book that kicked off one of my longest-running series — and for the next five days, it’s completely free.

So what is Atlantis?

It’s the answer to a question I couldn’t stop asking: what if the legends are real? Not metaphor, not mythology — real. What if Atlantis was a civilization so advanced it left scars across time itself, and we’re still living inside those scars?

The story moves across centuries — from 10,000 BC to an ancient drought-ridden empire, to a squadron of Navy planes vanishing over the Atlantic in 1945, to a covert Special Forces team in Southeast Asia in 1968, and finally into the present. Different people, different eras — all of them pulled toward the same mystery. All of them running out of time.

I drew on my Special Forces background for the military threads, and on decades of obsessive reading in history, archaeology, and the kind of fringe science that turns out not to be so fringe after all. Atlantis is the novel where those two halves of my brain finally collided.

If you like time travel, ancient mysteries, military action, and stories that actually connect the dots — this one’s for you.

Free today through the next four days. Grab it, read it, and if you like it, the series goes deep.