In an alternate early twentieth-century New York-an immigrant's daughter fights the forces of darkness to save her family-and finds an ally in Nikola Tesla... When Thomas Edison's corporate thugs steal her father's invention, Willow Locke must find a way to defend her family. Willow finds an unexpected ally in Nikola Tesla, who works in secret in a basement lab away from his main facility at Wardenclyffe, which he fears has been infiltrated by spies... Tesla is creating advanced technology that is a century ahead of its time, but everything he makes must be kept hidden. Willow will use his inventions to unravel the corporate union-busters and protect her loved ones from violence. But in the course of her investigation she uncovers a hideous secret, an immortal enemy pulling the corporate strings, and a devastating plot for a final annihilation. Even with Tesla's help, she is only one person. Can she stand against the forces of murder and darkness allied against her?