Extinction Theory

Professor Sydney Trent has spent his career arguing that fungus didn't just survive Earth's mass extinctions - it caused them. Nobody wanted to believe him. Then the military calls him in to look at a corpse that won't stay dead.

A deep-sea drilling rig has punched through into something that was never meant to reach the surface. What comes back with the rescue crew that boards her is patient, contagious, and very much alive inside its victims - right up until they start walking again. Within hours it's loose in a city of thousands, turning the infected into vehicles for its own spread and leaving General Virgil with a spreading quarantine, a body count he can't hide, and a professor who finally has all the proof he never wanted.

As Sydney races to turn his own research into a weapon, a burned-out ex-undercover cop is sent into the heart of the outbreak for a sample that might be the only way to stop it - and the General starts to suspect that the "accident" on that rig was never an accident at all.

Extinction has a cause. This time, someone weaponized it.