Join Marrill and Fin in the fourth action-packed title in the epic adventure series from John Parke Davis and NEW YORK TIMES bestselling author, Carrie Ryan.

Best friends and fearless explorers Fin and Marrill have shared countless thrilling adventures on the waters of the Pirate Stream, but neither could have predicted the evil that lies behind the mask of the Master of the Iron Ship.

To stop him, they'll have to team up with their oldest enemy: the malevolent wizard Serth. As the iron tide surges across the Stream, Marrill and Fin must race from one bizarre world to the next, and even into the heart of the Stream itself, to challenge the most frightening foe they've ever encountered.

This is the mind-blowing conclusion to the highly acclaimed and utterly original Map to Everywhere series.

This is book 4 in Map To Everywhere .

This book has been graded for interest at 9-12 years.

There are 352 pages in this book. This book was published 2018 by Hachette Children's Group .

Husband and wife Carrie Ryan & John Parke Davis have been in love with each other's writing (and with each other) since meeting in law school a decade ago. Carrie is the New York Times bestselling author of the critically acclaimed Forest of Hands and Teeth series. J. P. is an Assistant Federal Defender in the Western District of North Carolina as well as a published author of short fiction. Though they've been important parts of each other's writing for years, this is their first full collaboration. J. P. and Carrie currently live in Charlotte, North Carolina, with their two ornery cats and one gullible dog. Carrie Ryan lives in North Carolina with her partner. She trained to be a lawyer before becoming a full-time writer.