The Palace of Memory

In this sequel, Danny Woo has escaped death but is still haunted by the mysterious deaths of his parents, who were star performers in a radical traveling circus called the Mysterium. When Danny discovers that the Mysterium is re-forming in Barcelona without him, he rushes there to warn his friends after learning that the circus's enemies may be active in the city. As Danny investigates whether there is a traitor within the company, he searches for answers about his parents' deaths.