The spinning diamond-shaped craft in the declassified US Navy footage is real. The woman inside it is not an extraterrestrial.

Erin Swagger is a First Rank Adjuster — an elite time pilot from 2276 — who travels to pivotal moments in history to make invisible corrections before the human race destroys itself. She has worked in the shadows of events that changed the world, leaving no trace, filing her reports, trusting the program that recruited her from an obscure life on the Irish Atlantic coast and gave her a reason to matter.

She is very good at her job. Until she isn't.

When the truth of what the program is actually doing begins to surface — one mission at a time, across a century of carefully managed history — Erin must choose between the institution she has served and the principle it was founded to protect. And between a future that needs her compliance and a man in the present who needs her honesty.

The Alien is a thriller about time, power, and the difference between saving the world and deciding who gets to live in it.