Algodoo

still working on the map sgnps stll vlbl iuiaaiae

I think that the killer is Artic beacause he is the only one that has a reason to wear gloves since he wants to save Antartica

It obviously is Inverted rainbow
Inverted rainbow first hided herself behind Red's bookshelf, after stealing his camera to make him go to his room. When Red arived to his room, Inverted rainbow pushed the bookshelf, which hitted Red, and killing him. Inverted rainbow left Red's camera and the gloves she used in Red's room, then ran away.
Also, i think it's Inverted rainbow because:
1: Skyangel's doctor mask is missing, and the person in the Video tape was wearing a docter mask. I explained last time how Inverted rainbow could have stolen Skyangel's mask.
2: All stuff from last investigation.

And 3: Skyangel probably has gloves because she is a docter. Wow, Inverted rainbow really loves to steal from Skyangel.