The story of the men who build the transcontinental railroad in the 1860's.

A former slave finds danger, intrigue, and passion undercover as a spy in first of this Civil War–era romance series from an award-winning author. Elle Burns is a former slave with a passion for justice and an eidetic memory. Trading in her life of freedom in Massachusetts, she returns to the indignity of slavery in the South—to spy for the Union Army. Malcolm McCall is a detective for Pinkerton’s Secret Service. Subterfuge is his calling, but he’s facing his deadliest mission yet—risking his life to infiltrate a Rebel enclave in Virginia. Two undercover agents who share a common cause—and an undeniable attraction—Malcolm and Elle join forces when they discover a plot that could turn the tide of the war in the Confederacy’s favor. Caught in a tightening web of wartime intrigue, and fighting a fiery and forbidden love, Malcolm and Elle must make their boldest move to preserve the Union at any cost—even if it means losing each other. . . An Entertainment Weekly TOP 10 ROMANCE BOOKS OF THE YEAR A Bookpage TOP PICK A Kirkus BEST BOOKS OF 2017 A Vulture TOP 10 ROMANCE BOOKS OF 2017 A Publishers Weekly BEST BOOKS OF 2017 A Booklist TOP 10 ROMANCE FICTION 2017 “Richly detailed setting, heart-stopping plot, and unforgettable characters.” —Deanna Raybourn, New York Times–bestselling author “You should absolutely read this book, immediately, if you haven’t already. . . . This book is a marvelous, intelligent, respectful, breathtaking treat for your brain.” —Smart Bitches, Trashy Books

Published to coincide with the 150th anniverary of the battle of Gettysburg, features both familiar and rarely seen Civil War images from such photographers as George Barnard, Mathew Brady, and Timothy O'Sullivan.