The Malevolent's Mark (The Song of Excalibur Saga)

In this YA urban fantasy, a powerful young woman must face the destructive truths of a forgotten past if her kingdom has any hope of a future. It's 1921 in Camelot City, and King Arthur is still missing. Not that Birdie Smith, the Siren Thief, much cares. She’s too busy getting arrested. Only the automata are allowed to cast magic according to the king regent. To clear her name, Birdie will have to help a fallen knight save the king with a song that only she can hear. And she’ll have to do it before a handsome traitor from a past that Birdie doesn’t want to remember can enslave the seven United Kingdoms with his mark. Ensnared in a world where machines control magic, dark secrets abound, and forbidden romances await, Birdie is unsure whom she should trust, even her own heart.