Another British mystery by Elizabeth Kyle has a sprinkling of Scottish burrs as it follows young Walter and Chatty MacFayden down to a Christmas in London with the American Middletons. Bob and Marcia are older than the others and take over some of the mystery solving but it's really Walter who starts it all by his chance friendship with Winkle, a poor, mistreated boy. Winkle's jeweller father had died after a fire destroyed his shop, and his fortune, represented by seven sapphires, has been lost. The hunt involves a pleasantly complicated chase, after an errant chauffeur and after Winkle's cruel guardians who have their own plans if the jewels are found. But with the help of Mrs. Middleton's charming lawyer and some other interesting people, the sapphires are recovered and Winkle's future is secured. Orthodox, but the wrapping of London and Christmas give this dash and excitement.