If you’ve been following my Instagram lately, you might have noticed an announcement for a new book. This isn’t a regular book release but a new freebie for joining my steampunk newsletter.

Codex Leonardo is a prequel to the Undersea series, detailing how the world came to be, featuring Leonardo da Vinci and several other historical characters. If you haven’t read any of the Undersea books yet, this book can still serve as an introduction.

If you want a copy, all you have to do is click here and follow the instructions to join the mailing list and download a digital copy (this book isn’t available in paperback, unfortunately). In addition to the book, the newsletter will also give you regular updates, special offers, free stories, and background information on the Undersea series, and the upcoming Tales From the Skies spinoff.