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.
How did things end up this way?
كيف آلت الأمور إلى هذا؟
¿Cómo llegamos a este punto?
Como as coisas
chegaram a esse ponto?