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.
The other one was some wheel tracks.
.الآخر هو آثار مسارات العجلات
Der zweite waren
die Abdrücke der Wagenräder.
y la otra fueron unas huellas de ruedas.
La seconde était les traces de roue.
A outra, as marcas de rodas.
Второе же касается следов от колёс.