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.
Who are you?
من أنت؟
Wer seid ihr?
¿Quién eres tú?
Qui est-ce ?
Quem é você?
Кто вы, ребята?