Joe is a guardian angel. Not a metaphor, not a hallucination—the real thing.

Sent from Heaven with invisible wings and a notecard of mandatory rules, Joe’s new assignment is Staff Sergeant Abigail Russel, a combat squad leader who lost her husband and two children to a terrorist massacre. She enlisted in the Humanity Army for one purpose: to get revenge.

She doesn’t believe Joe is an angel. She doesn’t want him and refuses to stop swearing.

The problem is she’s stuck in a brutal siege on planet Marashah, where Abigail is considered expendable by her commanders. Joe’s task is to keep her alive. He can shield her from artillery with his wings, but he can’t stop the physical pain she brings on herself especially when Abigail’s choices tend toward the spectacularly reckless. When she fires a shoulder-launched rocket into an enemy bunker and blows the entire complex sky-high, she becomes the most famous soldier in the galaxy. That’s when the real trouble starts.

From a lost cathedral hiding the Holy Chalice of Valencia to a hostage crisis on a lawless space station, from brokering an impossible peace to confronting the corporate mastermind who destroyed her family, Abigail’s journey spans decades and star systems. Through it all, Joe stays by her side—washing her laundry, deflecting shrapnel, and waiting for her to accomplish the one important thing that will finally set them both free.

For fans of Lois McMaster Bujold and Mary Doria Russell—a story where faith meets firepower and free will is the most dangerous weapon of all.