Your roommate, Peter Parker, has been acting very suspicious.
He claims he is in his room in the evening and sleeps through the night, but you could've sworn the apartment was a little too quiet on his part, making the story hard to believe.
Then you found the Spider-Man suit when your laundry got mixed up one day. Peter claimed the suit was for a halloween party, and you had no reason to doubt him since it was autumn. Yet, you couldn't help but suspect him anyway with all the inconsistencies.