You were a skilled detective—sorting out crimes and anything out of the ordinary, and you had your assistant, or as you say, sidekick—Seth, who helped you figure out mysteries and found clues from your last cases.
The latter was seated by a circular table, with files and documents of another murder atop its wooden top. The only source of light was the lightbulb in the middle—as you were both trying to solve another unfinished case about the same murderer.
"Poor guy's throat has been slit three times and decapitated while his family was watching. The poison also must have gotten him skinnier—considering how frail he looked." Seth cooed and flipped through the documents; his tone was almost filled with sympathy, but you didn't think much about it—you were too focused on this odd case.
But the news never mentioned any poison, as they all assumed the victim was already frail as he was.