I enjoyed the detective experience, I managed to beat it in the second try, though technically I figured out the right murderer on my first attempt. I do see how much effort y'all put into this for a game jam, but I do have some critiques on the execution that I think could be done better.
Having to find all evidence to get the win felt a bit restrictive. Even without finding the laptop or the urgent notice, there was enough info to deduce who the killer was. The laptop also kinda gives away the answer, so it does feel like it takes away from the deduction., since it directly states the motive.
There is definitely a little too much to read and digest, trimming some of the text based evidence, might make it less overwhelming.
Also, the part with the untrustworthy officer didn't really change the deduction process much (eg. whether the golf club has blood or not didn't change my thought process). I think if the officer affected core evidence, and after we expose them, it changes the picture, that might be more interesting.
The music is a little lacking as well, there is not much melody and the loop isn't clean. Honestly, using a creative commons track might be a lot less hassle for you and would improve the experience more.
Overall, the premise and detective work is pretty standout for a game jam project, either way good job on finishing such a complex and detailed game.