"Helen Gray, a paranoid and disgraced former CIA officer, believed she was on the verge of preventing a national catastrophe—a mission worth dying for.
Others, including Devin, believe she was chasing delusions. Until he finds what she left behind.
With the help of longtime friend and former Marine helicopter pilot Marnie Young and a loyal team of covert operatives Helen summoned just before her death, Devin is propelled into a high-stakes chase across the country."