Nice little single substitution cipher implementation, the puzzles of course are just a few minutes to solve, but it's fun.

Nice one. When you replace a letter, it should go back to the board. I originally ran out of letters in the second or third puzzle because I had placed a K over an H and then couldn't remember where it was

This could be a great educational puzzle game if there were other murderers that used different ciphers. A little simple in its current state but still satisfying to solve, I enjoyed it