Man, they sure made Misaki SUPER-suspicious this week. Not even counting the coincidence of her being in the art room at the exact few moments before the guys arrived(if she wasn't lying), all the close-ups and 'coincidental' accidents with the window and the lockers just seemed like she was up to something. Since she was knowledgeable about the moaning of the basement, she might have snooped around and already found that tape, pointing it out for Kouichi to get. Also, the cohesiveness of that tape that SHOULD have been there for 14 years was far too strong and the color of it was slightly different that the color that wrapped the tape.