Big Books of 2026

Join the Goodreads Author Program

Are you David Marconi, author of the books below?
The Serpentine Assassin by Flint Dille Enemy of the State by David Marconi Double Agent - Two Different Spy Novels Under One Cover by Flint Dille Agent 13 and the Acolytes of Darkness by Flint Dille Agent 13 by Flint Dille Agent 13, the midnight avenger by Flint Dille AGENT 13 And The INVISIBLE EMPIRE Part 1 by Deniz Cordell AGENT 13 AND THE INVISIBLE EMPIRE Part 2 by Flint Dille The Invisible Empire by Flint Dille Agent 13 and the Invisible Empire by Flint Dille


To join the author program as David Marconi, you will first need to sign in to Goodreads. Then navigate back to this page to apply.


About the Author Program
Authors on Goodreads
Author Guidelines
Author Program How-To
Author & Advertisers Blog
Ask the Author: Featured Authors
About Goodreads