Searching for the true killer of Count Drebber, Sherlock and John set a trap for the culprit using a wedding ring found at the murder scene as bait. After a struggle in which the ring is lost, Sherlock is able to deduce who the real killer is.
To what end? Why create such an elaborate plan?
إلى أي مدى؟ لمَ قد يقوم بخطة مفصلة هكذا؟
Worauf ist er aus?
¿Con qué fin?
Quel est son but ?
Com qual objetivo?
И с какой же целью?