To honor her dying father's wish, Chicago stockbroker Shelby Harmon promises to hand deliver an envelope addressed to "Robert Nichols, Personal & Confidential." Her quest to find Robert leads her to a most unlikely place—the Castlehill Gardens outside Scotland's Edinburgh Castle. Who is this fiercely private man and what is his connection to Harmony Lane, her family's horse farm in Lexington, Kentucky? Harrison Reed cautions Shelby against dredging up hurtful memories for his close friend, Robert. As they explore the city together, Shelby and Harrison find themselves increasingly drawn to one another. When the contents of the mysterious envelope are revealed, the answer gives her hope for the future of Harmony Lane. Is the time spent in Edinburgh with Harrison destined to be nothing more than a beautiful memory? Did Shelby lose her heart in Edinburgh...or find her way home again?