Over a thousand years separate the Genesis Ark's departure from the day Solenne finally finds the courage to look back ? not a distance of light-years, but a distance of recognition. Earth didn't stop existing just because no one alive still remembers it. It kept going. It had its own centuries, its own wars, its own first contacts. And it never asked anyone's permission.

When a faint signal gains precise coordinates, Solenne faces a question its own history never prepared it to answer: what do you owe a place that has already forgotten you?

Commander Lena Kade didn't choose to be the one who carries that question to its source ? she was simply the right person, in the right post, at the moment someone had to go. She carries into the mission something more dangerous than courage: the quiet certainty that she already knows what she'll find. She's about to learn, in the first minutes of contact, exactly how much that certainty costs.

Because the Earth that receives her isn't the Earth of Solenne's collective memory. It's a cautious world, armed with suspicion ? and with a first contact of its own that the colony never knew existed. A world that looks at the newcomers and doesn't see heirs. It sees an uncomfortable question about loyalty, and about what's owed between generations separated by more than a thousand years.

And somewhere in the middle of that suspicion, a single name ? spoken aloud before someone who shouldn't recognize it, and does.

The Iron Oath is the seventh book in The Aurion Legacy, a hard science fiction saga about oaths that don't come undone once spoken, and about what's owed to the people who came before ? and the ones not yet born.

Continues the saga that began in Stellar Exodus.