Answer:
ok look... ill answer it if you post a other one and make it worth 100 points... Im not about to write no WHOLE essay for only 5 points
Explanation:
First, Sherlock realized it was weird that Mr. Wilson's assistant pushed for him to join the league. Then he realized when the league accepted Wilson so easily, considering he wasn't married and owned a business. Also, the job itself was very peculiar. Sherlock also saw the knees of Wilson's assistant's pants, they were worn indicating he had been on his hands and knees.
Thats all i know^_^