There are 7 books in the The Extinction Cycle series. The newest book is Extinction War which came out in 2017.

1
Extinction Horizon

Book cover of Extinction Horizon

The worst of nature and the worst of science will bring the human race to the brink of extinction...

Master Sergeant Reed Beckham has led his Delta Force Team, codenamed Ghost, through every kind of hell imaginable and never lost a man. When a top secret Medical Corps research facility…

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2
Extinction Edge

Book cover of Extinction Edge
A new threat that will bring humanity to the edge of extinction...The dust from Dr. Kate Lovato's bioweapon has settled. Projections put death counts in the billions. Her weapon was supposed to be the endgame, but it turned a small percentage of those infected with the Hemorrhage Virus into something…

3
Extinction Age

Book cover of Extinction Age

In the fight for humanity, one final hope remains...

Humans are losing the war. Master Sergeant Reed Beckham and the survivors of 1st Platoon must battle through the tunnels--where they make a grisly discovery.

Dr. Kate Lovato is working on a new bioweapon to destroy the Variants when a derelict…

4
Extinction Evolution

Book cover of Extinction Evolution
There's a storm on the horizon...Central Command is gone, the military is fractured, and the surviving members of Team Ghost, led by Master Sergeant Reed Beckham, have been pushed to the breaking point. Betrayed by the country they swore to defend and surrounded by enemies on all sides, Team Ghost…

5
Extinction End

Book cover of Extinction End

Almost seven weeks have passed since the Hemorrhage Virus ravaged the world. The remnants of the United States military have regrouped and relocated Central Command to the George Washington Carrier Strike Group. It's here, in the North Atlantic, that President Jan Ringgold and Vice President George Johnson prepare to deploy…

6
Extinction Aftermath

Book cover of Extinction Aftermath

Book six in USA Today bestselling author Nicholas Sansbury Smith's propulsive post-apocalyptic series about a soldier's mission to save the world.

A new monster emerges.

The newly christened leader of Delta Force Team Ghost, Master Sergeant Joe Fitzpatrick arrives in Normandy over 70 years after Allied Forces joined the fight…

7
Extinction War

Book cover of Extinction War

The final, never-before-published book in USA Today bestselling author Nicholas Sansbury Smith's propulsive post-apocalyptic series about a soldier's mission to save the world.

In Europe, Master Sergeant Joe Fitzpatrick and Team Ghost return from a mission deep into enemy territory only to find that the Variant army has grown stronger.…