Mammoth Books presents The Adventure of the Faithful Retainer

Holmes is summoned by his elder brother Mycroft to the Diogenes Club in Pall Mall where he is greeted by his brother and three other recognizable government diplomacy officials. The men require Holmes's expertise immediately, stating that they are working for an unnamed noble client of the highest station, who has serious concerns on behalf of his mother, a woman they insist on calling 'Lady X' fo...