LOCKED | Clary Jace (Dark!AU)

This is a pure AU version of Clary and Jace relationship. Jace is Valentine's only son (he had an older brother, Jonathan, but he is dead) and Clary is a spy. She seduces him to find and steal the Mortal Cup but in the process falls for him. Obviously, he falls for her but their relationship becomes very complicated and toxic after Jace found out why Clary was with him in the first place.