Okay so at first, I really didn't understand the theme. Then I saw the title again and I got it. A creative interpretation for sure! I also liked the song, it really fit the atmosphere. I also liked the cheesy "The conspiracy goes deeper than we thought" line. It made me feel like I'm in a cheesey noir movie or something hahaha. So great job on the narrative and the concept and the atmosphere!
A few pieces of feedback though: for a game where you listen to guards, some of their dialog is quite "throw away". For example: the first guard says he will leave his shift soon. I thought this meant I have to wait a bit for him to go away so I can proceed, but instead he just keeps walking around, so the first piece of information is not actually meant as a hint, which was confusing. Secondly, I got pretty close to guards but they didn't catch me, so that could be improved a bit. So the first piece of info made me think I really cannot get close and I have to find ways to get rid of them,, like waiting for them to leave the shift, but in actuality, i can just walk past them pretty generously. I would definitely make the guards see more, and you really have to stay on the other side of the wall in order to find ways past them.
But yeah other than that great job!