He caught John Clay breaking into a vault after Clay had created a fictional league as part of the scheme.
This character met his brother at the Diogenes [die-O-jeh-nees] Room, where he offered to help Mr. Melas. Earlier, this character claimed that his brother Mycroft was greater than he was but averse to interruptions. This character lured Chicago crook Abe Slaney out of hiding by using drawings of dancing men. He caught John Clay breaking into a vault after Clay had created a fictional league as part of the scheme. Name this fictional detective created by Sir Arthur Conan Doyle.
This character met his brother at the Diogenes [die-O-jeh-nees] Room, where he offered to help Mr. Melas.
Sherlock Holmes (accept either underlined part)