Sherlock is upset at not knowing who the mastermind behind the Noahtic and Drebber cases is, and takes his frustration out on John. While returning by train from an investigation, Sherlock has a chance reunion with William.
About the one who plotted out
Drebber's murder from start to finish,
،بخصوص الشخص الذي خطّط لجريمة دريبر من البداية حتى النهاية
Und zwar die Identität desjenigen,
der den Mord des Grafen
de quien planeó el asesinato de Drebber,
Le nom de celui qui a planifié de A à Z
Sobre quem planejou a morte de Drebber,
do começou ao fim,
Человек, который
 просчитал каждый шаг преступления