She can kill with a single touch. But all she wants is justice.

After escaping the genetic lab that gave her deadly powers, Ida tracks her tormentor to an underground city. But when she finally confronts the scientist who experimented on her, she uncovers a horrifying truth—he's building an army of super-powered youth, and his sights are set on conquering humanity's last chance at survival.

In a city where nothing is as it seems and everyone has a deadly secret, who can she really trust? And when forced to choose between revenge and protecting those she loves, what price is Ida willing to pay

Don't miss this thrilling fourth installment in the Rogue Spark series, perfect for fans of X-Men, The Darkest Minds, and sci-fi stories featuring found family, complex characters, and high-stakes action.