Wacky characters bring energy to this translation of an entertaining German novel about thieving children, a disguise-obsessed detective and a magical merry-go-round. After their mother dies, 12-year-old Prosper and his brother, Bo, five, flee from Hamburg to Venice (an awful aunt plans to adopt only Bo). They live in an abandoned movie theater with several other street children under the care of the Thief Lord, a cocky youth who claims to rob the city's most elegant houses. A mysterious man hires the Thief Lord to steal a wooden wing, which the kids later learn has broken off a long-lost merry-go-round said to make adults out of children and children out of adults, but the plan alters when Victor, the detective Aunt Esther hired to track the brothers, discovers their camp and reveals that the Thief Lord is actually from a wealthy family. There are a lot of story lines to follow, and the pacing is sometimes off (readers may feel that Funke spends too little time on what happens when the children find the carousel, and too much on the ruse they pull on Prosper's aunt). But between kindhearted Victor and his collection of fake beards, the Thief Lord in his mask and high-heeled boots, and a rascally street kid who loves to steal, Prosper's new world abounds with colorful characters. The Venetian setting is ripe for mystery and the city's alleys and canals ratchet up the suspense in the chase scenes.