Mystery Case Files: 13th Skull Cheats and Tips

Cant get screwdriver to work on piano any suggestions

On the sides of your map (left, top, right), you can find the same symbols that you have on the cannons.
On the map, between 2 symbols from the same kind you have 6 pieces of the map - you need to find where these pieces belong to on the map, when you find it, you'll see that a roman number is missing from the piece. This is the code you need. You collect all the 6 numbers for each symbol.

You have to pick the birdcage first. There is a bird cage hang on the corner of the mansion beside the beehive, near the stairs to the attic. You can unfasten the birdcage's screw with a screwdriver that you find in the shed behind the mansion. After you got the birdcage, come see charlotte again. Don't have to speak to her, just click your bird cage and click again over the parrot.

You would generally put the metal detector in a dry, cool place to prevent overheating and melting or rusting.

The stones are on the ground by the ship