Dead Reckoning

A Wilderness, Survival Thriller

When every instrument fails, you navigate by instinct — or you die.

The electromagnetic storm rolls in like nothing Cal Walker has seen before. GPS fails. Radios die. The instruments in the fire lookout spin uselessly. Somewhere deep in the backcountry, a small plane drops off radar.

No coordinates. No signal. No way to call it in.

Cal launches into the mountains the old way — compass, terrain, and memory. Dead reckoning. The method sailors used to cross oceans before satellites existed. You know where you started. You know your speed and heading. You calculate where you must be. You trust the math, or you die on the mountain.

He finds the wreckage in a ravine. Cockpit crushed. Pilot unconscious. A child's teddy bear in the cargo hold. Someone survived the impact — but the storm has erased every electronic lifeline between the crash site and civilization.

What happens next on that mountain will test everything Cal Walker is made of.

DEAD RECKONING is the fourth book in the Black Mountain Series — and the one that changes everything.