About

2014 Winner — Amazon Breakthrough Novel Award — Science Fiction, Fantasy, Horror

A single raindrop opens a Pandora’s box when the spawn of perverse genetic research performed during World War II is unleashed on an unsuspecting modern world. By dawn, only a dead city remains, eerily quiet and still, except for mutant beasts that hide from the light, multiply, and await the shadows of night to continue their relentless advance.

Ordered to investigate the unfolding crisis, biowarfare specialist Carolyn Ridenour barely escapes the creatures’ nocturnal onslaught, saved in the nick of time by Colonel Garrett Hoffman, who lost hundreds of his troops to a swarm that neither bombs nor bullets can stop.

As Carolyn and Garrett race to stop the plague, a battered and broken government prepares to release the fury of America’s nuclear arsenal on its own soil and its own citizens.

The Gemini Effect was originally published as The Mengele Effect. This edition has been completely edited and revised, including significant plot changes.

Discuss The Gemini Effect with other readers

Join or start a book club for The Gemini Effect on Readfeed. Live chat, shared reading progress, and AI discussion questions — free to get started.

Frequently asked questions

How do I join a book club for The Gemini Effect?

Sign up free on Readfeed, then browse public clubs or start your own club with The Gemini Effect as the current read. Invite friends with a share link and discuss together with live chat and AI discussion questions.

Can I discuss The Gemini Effect with other readers online?

Yes. Readfeed book clubs let you chat live, share progress, and join discussions about The Gemini Effect with readers worldwide — whether your club is virtual, in-person, or hybrid.

Is Readfeed free?

Yes. Creating an account and joining book clubs is free. Sign up to find readers who love the same books and start discussing today.