The Travelers Detective Club Paris - The Travelers Detective Club, #2

Parisian art and landmarks are disappearing! The members of the Travelers Detective Club are in France, trying to outwit far-right radicals who are trying to cause chaos and take over the government. In this children's mystery, the detectives explore Paris with their magical sidekicks who prove more powerful than ever. When one of their group is kidnapped, the detectives must race to save them while landmarks seemingly dissolve into thin air.
But what happens when they forget to watch their backs? And just how many groups are they up against?