Runs in the Family by Kevin Ikenberry is a military science fiction novel about Mairin Shields, an outcast who undergoes a genetic experiment to implant her great-grandfather's combat memories, transforming her into a soldier to fight a galactic war, blending futuristic warfare with themes of identity and legacy. The story follows her journey as she learns to use her new skills, navigates military life, and confronts a familiar enemy, all while developing a relationship with an alien architect.