I

Grace is a hired thief, the most famous thief in all of Spain because of her unchallengeable skills, impossible heists that she's pulled off, and eerie silence in which she does them. To the world, she is thought to be a boy that everyone calls The Silent Thief. But behind the mask and hood, she is a twenty year old girl.
Grace is forced to locate a mysterious treasure of significance she is yet to discover. In her world of love, monsters, prophecies, and strange powers, she will uncover that what she must find isn't what most people would call gold or diamonds but will inevitably put the world in great danger.