This game is just awesome!!
The art is so pretty and every aspect of the game was so fun.
You can't even imagine how happy i was when i saw the bonus level!!
(6 and 7 were kinda slow tho, no spell really matched so yeah)
My only suggestion would be to add a submit button, the "rule out" light to be only for tracking who you believe it's not guilty. After deciding for sure, press a button and select the guilty one.
And add more levels maybe :)
Best of luck !