I don't get the Detective's motivations anymore. He originally was determined to prove that Kindaichi was committing the crimes as some puppetmaster that wants to prove his ability but lately he's been completely ignoring that plotline. He's just like, 'nope just a suicide, case closed'. You'd think at the very least he'd be sneaking around trying to find Kindaichi red-handed. "why would I listen to a mere PR manager?' Um, because you don't that he's solved multiple crimes similar to this and were suspecting that he was the true culprit so having him explain things would be closer to proving your point than it just being a normal murder/suicide case?
Thanks for translating anyway.