In 1885, wealthy New York socialite, Beret Osmundsen, received the terrible news of the death of her estranged younger sister, Lillie. She travels to Denver, convinced that her sister's murderer has not been caught. Her investigation takes her from the dangerous, seedy underworld of Denver's tenderloin to the highest levels of Denver society. With the help of detective Mick McCauley, Beret ultimately unearths the truth about the sister she couldn't save and exposes the darkest side of Gilded Age ambition in the city in the process.