In the first place, what led him to believe Jan Ren was capable of investigation? Based on the previous request, besides several cues hidden all around the room there really weren't many notes to take into account. All the Sinese did was clean and organize a little, and while yes his reputation in the city did grow somewhat -- was it really enough to be invited specifically for a crime scene investigation? --Apparently, for Weirdlocke Jones, the answer is 'yes'.
When he'd arrived at the crime scene, the Sinese came to learn how he had underestimated the urgency of the situation. Everything was still fresh; enough for him to scrunch his nose in disgust, as the smell of blood wasn't just still lingering but all too strong. Freshly spilled blood meant a recent struggle, and with this prominent of an odor it meant at least one death by bloodloss. Quick deduction, this was a crime scene after all. Several tapes sealing off the area as guards were stationed all over, the familiar pompadour sticking out like a sore thumb in the darkened scene. There he was, the detective.
"Oh, Jan." He noted, holding an odd magnifying glass in his hand. "Thanks for coming on such short notice." Common courtesy was given but the tone of voice couldn't be more serious. The Sinese would make a mental note to keep in mind this man was in fact a professional, contrary to his previous impression. "Detective, what happened here?" He asked, looking around as the stench still visibly bothered him;
"That's what we're here to find out."
WC: 300