Available Editions

Novel

Hardcover

Book cover for Relentless
2020 Year
Harper Voyager Publisher
ISBN-13: 978-0-06-268867-5
ISBN-10: 0-06-268867-7
Buy on Amazon

Paperback

Book cover for Relentless
2021 Year
Harper Voyager Publisher
ISBN-13: 978-0-06-308587-9
ISBN-10: 0-06-308587-9
Buy on Amazon

Digital Books

Book cover for Relentless
2020 Year
Harper Voyager Publisher
ISBN-13: 978-0-06-268866-8
ISBN-10: 0-06-268866-9
Not Available for Purchase

Audio

Book cover for Relentless
2020 Year
HarperCollins B and Blackstone Publishing Publisher
ISBN-13: 978-1-0941-6847-0
ISBN-10: 1-0941-6847-5
Not Available for Purchase