Book 27 in the series.
"When Drake’s team respond to a desperate message sent by Cam’s sister, they find themselves thrown into the middle of a volatile, fifty-year-old feud about to ignite the warring traveling clans of Romania. Cam’s father has controlled the mysterious Carnival of Curiosities for half a century, managing a dreadful criminal conspiracy behind its entertaining façade. Surrounded by myth, magic and death, the carnival tours Romania, attracting huge audiences but hiding a terrible secret. Dahl and Alicia storm across the country, trying to rescue Cam’s sisters, who have been abducted by a rival clan, whilst the others infiltrate the carnival. Betrayal, bloodshed and murder reign in the shadows cast by the Ferris wheel, the Wall of Death, and the burlesque."