(Idk, I just thought of Hamilton) 

Andrea was walking down the dorms. She heard someone near by. She was going to kill someone until she saw the body of Natsumi Suzuki around a corner. A knife in her head as she is facing down. "A body has been discovered" said the Monoman.

Death: Natsumi Suzuki 

time of death: 4:00 pm, a hour after the motive

evidence: a specific type of knife, black cloth, a half a body of sleeping medicine(liquid), and a rag on her mouth