When her husband pushed her into the ice-cold lake to collect a $10M policy, he forgot one fatal detail: his "fragile" wife was a former Olympic open-water swimmer.

Survival in the woods under early-stage hypothermia is a mathematical equation: calories plus heat divided by time. If the sum reaches zero before shelter is established, you die.

My hands were nearly useless, the nerve endings in my fingers deadened by the lake water. I could barely bend my knuckles. But Pine Island was not completely foreign to me.

When I was twelve years old, my father used to bring me camping along the North Shore. He had taught me that the old forestry service had built emergency shelters on three of the Apostle Islands in the 1970s for stranded fishermen—small, rough-hewn log cabins equipped with cast-iron stoves and dry firewood.

I dragged my numb feet through the dense underbrush, using the north star, visible through breaks in the storm clouds, to orient myself. Every branch that whipped against my wet face felt like a hot iron, but the physical pain was a gift; it meant the nerves were still firing.

Ten minutes into the trek, through the thick stand of white pine, the sharp silhouette of a wooden roof appeared.

The cabin was tiny—no more than twelve by twelve feet—with a heavy cedar door held shut by a simple wooden latch. I slammed my shoulder against it. The latch snapped, and I stumbled inside onto the dry dirt floor.

In the corner sat a potbelly cast-iron stove. Beside it was an old wooden crate filled with dry cedar kindling, seasoned birch logs, and a glass jar containing strike-anywhere matches sealed in paraffin wax.

My hands trembled so violently I couldn't grasp a match. I had to bite the wax coating off with my front teeth, place the match between the heels of my palms, and drag it across the side of the stove.

Scratch.

A tiny flare of yellow light illuminated the dark cabin.

I touched the match to a bundle of dry birch bark inside the stove. Within three minutes, a roaring fire was cracking behind the iron door, radiating a fierce, golden heat that filled the small space.

I stripped off my ice-cold, soaked clothes and hung them over a wooden drying rack beside the stove. I wrapped myself in an old, moth-eaten wool blanket stored in the corner trunk, sitting on the floor with my back pressed against the warm iron.

As the blood began to recirculate through my body, the deep, excruciating pain of rewarming set in. My skin felt as though it were being scrubbed with wire brushes.

I ignored it. I opened my mind, pulling out the mental floor plan of Vance Maritime headquarters.

Julian thought he was safe because my laptop, my phone, and my notes were currently sitting in my leather handbag on his boat—doubtless destined for the bottom of the lake or a trash incinerator.

What Julian didn't know was that I had not left the original evidence on my personal devices.

Before we left the house for this "romantic weekend getaway," I had mailed an encrypted flash drive containing five years of altered shipping manifests, foreign bank transfer receipts, and the autopsied toxicology report from my father’s death to my corporate lawyer in Minneapolis, Arthur Vance—who also happened to be Julian’s estranged uncle.

Arthur was the black sheep of the Vance family. He had left the family firm twenty years ago after a bitter dispute with Eleanor, choosing to open a private practice that specialized in corporate forensic litigation.

The flash drive was set to be delivered by FedEx on Monday morning at 9:00 AM, with a automated release protocol requiring my biometric passkey to delay public filing with the Federal Bureau of Investigation.

If I didn't enter that passkey by noon on Monday, the files would automatically be transmitted to the Assistant United States Attorney for the District of Minnesota.

Today was Saturday night.

I had thirty-six hours to get off this island, reach the mainland without Julian or Eleanor discovering I was alive, and get to Minneapolis before their security team realized what was about to hit them.

Through the small glass window of the cabin, I watched the storm rage across the lake.

Julian was probably sitting at the sheriff’s station right now, putting on the performance of his life. Eleanor would be sitting beside him, patting his hand, playing the grieving mother-in-law who had tried so hard to welcome a tragic, unstable girl into her high-society family.