Back when Billie Jensen's life was simple, Tommy Miles had been her older brother's best friend. They'd had that deeper than blood kind of connection and Tommy had even lived with them for a few years before he and Zach joined the Marines. At some point, that simple life got complicated. When Zach died, it had fallen apart completely.In Zach, Tommy had found his soul brother; it had even included an annoying little sister in the bargain. Then Zach died, and Tommy lost the entire Jensen family, something he blamed that little sister for.But now everyone is out of options. Billie's son is sick, and Tommy could potentially save his lifeTommy is used to rolling with the punches that life throws him, but when Billie shows up at his door asking for help, and ready to reveal a devastating secret, he's not sure he'll ever be able to forgive her for turning him upside-down - again.Please not: Even though 'Resonance' is a part of the Marauder Series, it can be read as a standalone.