The Devil's Trumpet

She stepped outside for air. When she came back, the safe house was gone. Not burning. Not smoking. Gone-obliterated in a blast so powerful it left nothing but ash and rubble. Everyone inside, dead. The FBI agents guarding her. The marshals who promised she'd be safe. All of them, incinerated. Dr. Luka Sims should have died with them. Instead, she's running. Alone in the Virginia wilderness with forty dollars, no phone, and a secret in her head worth killing for.
The asthma drug she helped develop has a monstrous side effect, giving whoever possesses the formula the key to ultimate power. And with a presidential election three weeks away, the people hunting Luka will stop at nothing to get it. But Luka is a chemist, and the forest is full of weapons if you know where to look. Pursued by a tactical team, hunted by drones, Luka must outrun, outthink, and outfight an enemy with limitless resources - armed with nothing but her wits and whatever she can coax from the wild.
A propulsive, unputdownable thriller for fans of Dean Koontz, Thomas Perry, and CJ Box.