"Last Sunday."
Sherlock took a sip of his wine, the corners of his mouth turned slightly upward, revealing a self-satisfied smirk, "They first came into my view when Edward and I were investigating the Sweater Brothers Association.
"To satisfy my fatal curiosity, Mr. Edward chose to lure me with other puzzles. What he didn't anticipate was my study of psychology—I knew that when in such a situation, the 'second topic' that subconsciously comes to mind is often related to the matter at hand.
"The bait he used to distract me was a case, codenamed 'Redstone', that the Supervisory Court was investigating: a batch of high-power, small-sized portable alchemical bombs that were smuggled to Avalon from the Pelican Bar.