First they ventured deep under New York to save the city itself.

Then things got personal as the Irregulars ventured into a haunted mansion in Chinatown to uncover an evil twin.

Now, in the third installment of bestselling author Kirsten Miller's Kiki Strike series, this delightful group of delinquent geniuses jump feet first into a fast-paced international pursuit, going underground in Paris to pursue a pair of treacherous royals who have killed Kiki's parents.

With a dash of romance, a fresh take on good manners, and loads of butt-kicking bravery, Kiki, Betty, Ananka and the other Irregulars sharpen their amazing skills in this highly anticipated new adventure.