Katherine MacDonald is on her own. Divorced with two small children while Edinburgh is being bombed during World War II, she is desperate to survive. Her long hours working at a laundry barely pay her bills. Her only solace is writing, but she could never imagine how a little pen found in an antiques store would change her life. Astonished, Katherine watches as the pen drags her hand across pages, scrawling out words from the past—the words of the medieval knight Francois Jacques LaMar. Soon, Katherine finds herself time-traveling into the past to witness Francois’ life as he rises from being a miserable orphan to a Grand Marshal of the Knights Templar, honored by all. And in his writing, he reveals a secret treasure that he hid away that still waits to be found. Amid the chaos of World War II, Katherine begins to search Francois’ writings for clues to the Knights Templar’s hidden treasure. Overcoming treachery and setbacks and finding trustworthy companions, she travels to the black, dangerous Cuillins Mountains on the Isle of Skye, little realizing the Nazis also seek the treasure.