The world's most known and appreciated detective, Sherlock Holmes, is challenged by the realization that there is another woman out there, one that takes the place of The Woman in his heart and life. Holmes is taken for a ride through the adventures of the heart as he solves the mystery that surrounds Marion Ryan and her cousin, Sarah Dartford-Trevail. He is forced to look at the Christmas season in a new light, dropping his Scrooge ways, and then the new year brings a case of vital importance to the country - and Marion is in tow. Danger returns to the cousin's lives, and Holmes averts a tragedy - for the women as well as for himself and Watson. This book contains Parts 1 to 4 of the Sherlock Holmes® Adventure and Romance Series: The Cambridge Crisis, The Finding of Belle and the Christmas Spirit, The Case of the Crown Jewels, and The Folkstone Near-tragedy.