Welcome to Paris, Land of Wonders!

1908: Louis Denizart Hippolyte Griffont, a mage and a gentleman, is entrusted with a delicate investigation: to unmask a cheat using magic to run a stylish Parisian gambling ring. In so doing, he dives deep into the heart of an affair of state involving the OtherWorld. And to make matters worse, a very attractive renegade fairy, a spy and a burglar in her spare time, has resurfaced...
2-volume ongoing series, volume 1.