Challengeby Sapper There are twelve tales in this compelling collection, written by the creator of Bulldog Drummond, who once more proves his mastery with the cream of detection. Pages of Challenge : Page 1Page 2Page 3Page 4Page 5Page 6Page 7Page 8Page 9Page 10Page 11Page 12Page 13Page 14Page 15Page 16Page 17Page 18Page 19Page 20Page 21Page 22Page 23Page 24Page 25Page 26Page 27Page 28