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 also went to Number 3
on the day of the crime.
.ذهب للشارع رقم 3 يوم الجريمة
der am Tag der Tat zur Nummer 3 fuhr.
que haya ido a la número 3
el día del crimen.
qui est allé au 3, Lauriston Gardens
le jour du crime.
que também esteve no
número 3 no dia do crime.
известно, что в день убийства
 подъезжал к дому номер 3.