In Troy’s debut, the worlds of an Irish immigrant, a New York society girl, and two slaves collide via the fight against slavery and the Civil War. This historical saga begins during Ireland’s Great Famine and brings readers through to post–Civil War America. In 1847, Ethan McOwen arrives in New York City to pursue a new life with his family. By the time the Civil War begins, the McOwen family has established a comfortable life, with Ethan having become a respected photographer. Ethan and his friends join the famous Irish Brigade, and he begins documenting the war through his photographs. Later, at an exhibition of his work, Ethan meets Marcella Arroyo, a beautiful, sophisticated woman who’s chosen to shun her family’s wealth and dedicate herself to abolition. Meanwhile, in Richmond, Va., slaves Mary and Micah lead two very different lives. While Micah suffers constant abuse and sleeps on a pile of hay, Mary’s owners consider themselves kind, providing her with “privileges” such as a bedroom. They soon fall in love, and unusual circumstances eventually bring all four characters together. Except for the predictable Marcella, the depth of Troy’s characters offers compelling insights into the Civil War era. (Feb.)