Publisher's Synopsis
'How would you like to go to England with your mother and dad?'...... These words, spoken by a business associate of Mr. Bobbsey, sent the two pairs of lively twins, into an exciting adventure involving a plot to steal the Crown Jewels from the Tower of London.  It may have been ill-luck for Silver Smitty, a famous jewel thief, to have sailed on the same ship with the Bobbseys,  but it was fast thinking by Nan and Bert which finally delivered the criminal into the hands of the London police.  But London provided more than myster.  There the twins met Gail and Gavin Radford, two English youngsters who were just returned from a tour of the United States.  Gail and Gavin took the Bobbseys to see an old castle that might have been the model for the miniature castle the twins had built for the Children's Hospital in Lakeport.  As usual,  there was never a dull moment when Flossy and Freddie and Nan and Burton explored a new territory this time Freddie even took part in a jousting match young friends with the Romsey twins will certainly enjoy his latest exciting adventure.
 
World Distributors; 1959. Hardcover with unclipped dust cover. Small portion missing to bottom of dust cover. Patterned end papers. Pages yellowing due to age. Slight minor age spotting throughout. Binding tight and text clean. Preowned. No ISBN.