i feel like the spooky secrets idea would be good if you gave it a lot of deadpan comedy
like he's showing all the typical signs of being a zombie or something like that and the dude questions his roommate about it but he keeps finding excuses to get his way out of it
"why are there dead bodies in your half of the apartment all the time?"
"oh dude didnt i tell you im a biology major"
"yeah but im pretty sure i saw you eating them once"
"i was hungry man, you said you would go to mcdonalds and you forgot to get me anything"
"you're eating them right now dude, and is that your jaw on the floor?"
"hey forget you dude dont change the topic here"
cue a big argument about mcdonalds as the roommate is currently eating a dead body
next shot is the dude who is the focus of the documentary standing outside of the dorm room with the door shut behind him, arms crossed
"man forget that guy, what an starfish"
"we probably wont be shooting here for a while, he always gets like this"