Lady Candling, who lives next door to Pip and Bets, owns some very expensive pedigree Siamese cats. So when her most famous cat, Dark Queen, goes missing, can the Five Find-Outers discover who’s to blame? Luke, the gardener’s handyman, seems the obvious culprit. But is somebody trying to frame Luke? The mystery deepens when Dark Queen reappears, bedraggled but unhurt – and then, stranger still, vanishes again! Piecing together the clues of pale paint, turps and some wellington boots, can our ingenious young sleuths reveal the truth?