This third book by Roger Riccard brings forth a series of six short stories occurring during the Christmas seasons of Sherlock Holmes' career, with each title taking its name from the carol, The Twelve Days of Christmas. In this first volume we meet The Seventh Swann, The Eighth Milkmaid, The Ninth Ladyship at the Dance, The Tenth Lord Leaping, The Eleven Pipe Problem and the Twelfth Drumming.