Con and Conjure (Raine Benares Series #5)

Raine Benares is a seeker who finds lost things and people. Ever since the Saghred, a soul-stealing stone that's given her unlimited power, has bonded to her, the goblin king and the elves have wanted to possess its magic themselves. Which means a goblin thief and her ex-fiancé-an elven assassin-are after her. To survive, she'll need the help of her notorious criminal family.