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Dark Frontier by Jeff Marlow

hardcover cover

hardcoverPrimary

Publisher:: Random House Publishing Group
ISBN:: 9780593230183
Pages:: 400

Edition cover

Publisher:: Faber & Faber, Limited
ISBN:: 9780571364923
Pages:: 300
Published:: 8/28/2025

Edition cover

Publisher:: Random House Publishing Group
ISBN:: 9780593230190
Pages:: 464
Published:: 4/7/2026