Holmes sets about not only reviewing the details that he learns from Holder, but also by examining the footprints in the snow outside. Eventually, Holmes solves the mystery, and Holder is flabbergasted to find that his niece was in league with a notorious criminal (Sir George Burnwell), although apparently she is unaware of his character. The two of them escape justice; however, Holmes is convinced that they will receive their punishment in due time. Arthur's motive in allowing his father to think he was the thief was that he was in love with his cousin Mary and saw her passing the coronet to a confederate outside the window. (The coronet was broken when Arthur was struggling to wrench it from Burnwell's grasp.) Holmes regains the jewels after threatening Sir George at gunpoint.