A gripping crime series set in 1860s New York City, centers on Kevin Corcoran (Tom Weston-Jones), an intense, rugged Irish-American detective working the city's notorious Five Points neighborhood. Corcoran struggles to maintain his moral compass in a turbulent world while on a quest to learn the truth about the disappearance of his wife and the death of his daughter, as well as his best friend's betrayal. As he attempts to rebuild his life, the others strive to find their place in the American saga, be it for good or evil.