Officer Lukar had been focusing on Kent's case lately, the owner of a small gambling den. Because many had died, the Golden Port City Police Department had marked it as a high-priority investigation.
It might sound like they really prioritized it, but in fact, many cases received this label, and most of them ended up unresolved.
Some were due to lack of clues, while others had leads, but the investigation could go no further.
A very prestigious divine detective once said that the hardest cases to solve were random, indiscriminate murders where the perpetrator's motives were beyond the understanding of ordinary people.
Without sufficient evidence or eyewitnesses at the scene, such cases were basically unsolvable.
As for those investigations that could not proceed, whether there was evidence or eyewitnesses, they couldn't go further.