[@Avanhelsing] Oh, I should've specified - the 'information' given would have been the clues. You could even supply pre-made NPCs with their own personalities and the like if you've got enough ideas. My worry is that you might have to deal with 8-9 different conversations in different locations with different NPCs and since it'll mainly be back-and-forth dialogue with one question at a time it could take weeks, even months IRL to finish a simple case - and that's provided you don't suffer from some serious burnout from having to manage all those different scenes at once. By PMing the clues, the setting and the NPCs to the players, you can use the players' independence to allow them to make their own scene and RP out their own interactions whilst you get to focus on the overarching plot.

Don't get me wrong, I'm not implying that this is the ONLY way you should handle the whole investigation side of the RP either. If you've got a particular plot-associated NPC (Like the drunkard) or we're all in one big group or something there's no reason why you can't take control of the scene, in fact I'd be more worried if you didn't. But for the simple clue-finding portions of the RP you could probably just provide us with building blocks and only intervene if we're doing it incorrectly.