She was a passionate lover. Was she also a murderess? Edinburgh, 1567. Like an angel of mercy, beautiful Mary, Queen of Scots nurses her ill husband before suddenly leaving his bedside to attend the wedding festivities of her maid of honor. Hours later, the calm night is shattered by a devastating explosion. The king's body is found in a field with a cloak, a chair, a slipper and a dagger by his lifeless corpse. Incredibly, there is not a mark on him. For a queen besieged by her enemies, it was the hour of her darkest danger... Scotland, land of wild moors and pagan passion is swept by violence and bloodshed. When stolen letters cast suspicion on the queen herself, she is accused of murder. Only the shadowy scholar Nicholas Segalla, a man who has solved many of history's most famous murders, can uncover the truth. Was the fiery Mary the perpetrator of the King's bloody murder, or the object of a ruthless plot of betrayal, crafted by England's most masterful assassin, the Raven Master?