Interesting and creative concept! I liked the "appeal" mechanic for when the investigator is wrong, and the moody music was great :)
Maybe I'm just being dumb, but I didn't get the "lock" mechanic - the icon would be headphones, he would say headphones, I'd click "lock" and it would say I was wrong? Like I said, maybe I didn't understand it properly lol.
Either way, a super cool project with a lot of potential! :)