"The sinister Umbra has [its] sights set on recruiting a North Korean nuclear physicist by any means necessary, and the City Spies plan to keep an eye on his son by sending Paris to the chess prodigy's tournaments in Moscow and Beijing. Meanwhile, Sydney's embedded as a junior reporter for a teen lifestyle site as she follows the daughter of a British billionaire on tour with the biggest act on her father's music label to uncover what links both...

Rebel surfer-turned-field ops specialist Sydney finds herself in hot water while undercover on a marine research vessel, while her City Spies teammates investigate a suspected mole.

"The spies head to New York City when a credible threat is made against a young climate activist."--