This house is super duper impressive, though I get the feeling it was entirely premade assets? With all the detail in the environment though, I noticed a lot of artifacts from the textures being too HD, like if you stand still, the camera bobs subtly and causes all the textures to shimmer. I believe enabling mipmaps would've helped with this, so that surfaces that are further away / viewed at an angle have less detail. Also on graphics, enabling screen space ambient occlusion would've helped bring all the assets together.
On the gameplay though, I had no issue figuring out what you had to do, each of the items had a clear purpose which was easy to intuit. I did feel like there could more threat, as it was, I didn't know how much time I had because it wasn't clear what time causes failure. Midnight I suppose? I initially skipped over a lot of books because the timer didn't pause, and I was initially concerned about time, but I later came back to them. From reading the books I had expected different types of ghosts that would have different signs for you to look out for, but I like that you kept it simple for the jam!
Neat little game that was fun to learn, it'd be really interesting having more scenarios with different ghosts and new tools to learn on the job!