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.
His competency as a detective
appears to be quite genuine.
.كفاءته كمحقّق تبدو حقيقة فعلا
Seine detektivischen Fähigkeiten
sind ernst zu nehmend.
Su capacidad como detective
parece ser auténtica.
Ses talents de détective
n’étaient pas exagérés.
A competência dele como
detetive parece bem genuína.
Его детективные способности
 не вызывают сомнений.