From the publisher:
After New York, Paris and Hollywood, we now find our heroes in Barcelona!
While on tour in Barcelona, Grace is accused of stealing a rather particular work of art, a unique creation by the great Master Salvador (Dali, of course). Fourmille and Yuri, who brought in their luggage a bound and gagged Sigisbert to make him confess the secret of the Preshauns, join up with her and investigate to clear her name.
In Barcelona, Fourmille is possessed by the spirit of a cat, while the city worries about the numerous disappearances of young girls