By Stephan Lee
July 19, 2013 at 03:50 PM EDT

In an interesting publishing strategy, Simon & Schuster is releasing two novels by the same author about the same chilling concept — Cain’s Blood and Project Cain — one for a young-adult audience, and the other for an adult audience. Below, read author Geoffrey Girard’s explanation of his two books below; also, see the exclusive trailer for Project Cain (out Sept. 3).

Cain’s Blood and Project Cain are two different novels written about the same fictional event. In both, scientists have been creating unpleasant things for the military, and these unpleasant things escape. The two books explore the trouble and adventure that ensues — but each does so differently. Cain’s Blood uses the form and devices of a traditional thriller. It follows the story from a dozen viewpoints — mostly from the narrative point of view of former army ranger Shawn Castillo (the character brought in to fix things), but also via chapters and scenes from the perspectives of various killers, military schemers, evil scientists, and victims, all of which help create the big picture as the full horrifying story unfolds.

Project Cain is told from the point of view of one character: Jeff Jacobson, the sixteen-year-old clone of Jeffrey Dahmer, who has recently discovered his true origins and who is recruited by Castillo into helping, we hope, save the day. It’s a much more personal journey told through the voice and reflections of a smart, lost, and thoughtful teen. A thriller specifically written for young adult readers and those adults still interested in young heroes.

These are standalone novels. You could read the one and never bother looking at the other and have a complete story. Reading both just gives a more complete story. There are many parallel novels written by others to capture a new perspective on an old favorite (i.e., Wicked and Grendel). In this case, it just happens to be two books written by the same author at the same time. It was very important to me that readers curious enough to read both Cain books would be well rewarded.

What do you think of the trailer and the dual publication of Cain’s Blood and Project Cain?