Welcome to murderer vs. detective thing! The controls are pretty simple. Arrow keys to move, space to use item and E to open inventory. to move stuff around in your inventory simply click on one box and then on another box, and the contents of the two boxes should be switched. Also, if you are touching a chest your inventory will double in size. Remember, the TOP half of the chest is your inventory. Have fun!
Just a test, nowhere close to done. Thank you @neilpeel3000 for helping me come up with ideas I apologize if the game is sometimes not working, because I am constantly updating it and am in the middle of working on it.