Portal

Sequel to Threshold, Book Three in the best-selling Boundary series.

An exploratory mission to Mars and beyond begets a rush to gain control of advanced alien technology—even if it leads to an interplanetary war.

Stranded on Europa: Madeline Fathom miraculously crash lands the crippled Nebula Storm on Europa with the surviving crewmembers of an ill-fated EU vessel landing nearby. Help is most definitely not on the way. Escaping a trap of mysterious alien technology—then using it to her advantage—is Madeline's only chance to escape a very frosty demise on a very lonely moon.

Cover Art by Bob Eggleton

Hardcover

This is a work of fiction. All the characters and events portrayed in this book are fictional, and any resemblance to real people or incidents is purely coincidental.

First printing, May 2013

Distributed by Simon & Schuster
1230 Avenue of the Americas
New York, NY 10020

Printed in the United States of America

ISBN-13: 978-1-4516-3896-7
eISBN:

Copyright 2013 by Eric Flint and Ryk Spoor

All rights reserved, including the right to reproduce this book or portions thereof in any form.

A Baen Books Original
Baen Publishing Enterprises
P.O. Box 1403
Riverdale, NY 10471
https://www.baen.com

Electronic version by Baen Books
https://www.baen.com