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.
It is a very simple matter.
.إنها مسألة بسيطة للغاية
Die ist ganz simpel.
Es algo muy sencillo.
C’est très simple.
Uma questão bem simples.
Они предельно просты.