THEY TOOK EVERYTHING. HE BUILT A WAY TO TAKE IT BACK. John Mercer could build almost anything. A drunk driver stole his six-year-old son. A corporate layoff erased nineteen years of loyalty. Then an insurance company denied his wife's life-saving treatment, hiding behind policies and profits until it was too late. Grief should have broken him. Instead, it made him dangerous.

Standing before an ancient cannon outside the White House, John conceives an impossible invention: a revolutionary wheelchair capable of launching him over barriers no one else can cross. Hidden away in the mountains of West Virginia, he transforms heartbreak into engineering-and engineering into justice. With the help of a brilliant hacker and technology years ahead of the law, John wages a daring campaign against the corporation that destroyed his family. Banks are robbed without a trace. Millions vanish. Corporate secrets are exposed. Families ruined by greed receive anonymous fortunes. Across America, the impossible becomes legend.

Some call him a criminal. Others call him a hero. As the FBI closes in and a ruthless private intelligence organization is ordered to erase him before he can expose a far-reaching conspiracy, John must decide how much of his humanity he is willing to sacrifice for justice. Because the most dangerous weapon in the world.isn't a cannon. It's an engineer with nothing left to lose.