Even without that crown, putting the 13th skull on triggered the last scene.

1 - The final scene; is the detective dying?
2 - Is that the final scene (or) did missing that last crown stop something else from happening?

1. Enter “pippi” as the computer password.

2. Calling F.T. Fish on payphone in the bar at 737-4410 before you call Lamont or play the Claw Game because the coins will go away.

3. Fish fountain at the front of the house - the pattern is at the crow’s nest on the ship. The pattern is the center spot and the inner most ring.

4. Plunge the kitchen sink with the plunger before you fix the toilet - backwards clue from the game credits.

5. Play the notes BFG on the piano - clue from the game credits.
B = the white key to the right of the 94 key
F = the white key with 114 on it
G= the white key with 7 on it

6. One is in the margin of your journal, usually around page 20 to 25.

7. Spell out Rowena Spinch on chest lock that is under the mausoleum before you spell out Phineas Crown – clue from the game credits.

8. Use the metal detector then dig a hole with the shovel on the footprints in the swamp before you dig up the last coin.

9. Use the can opener on the white can on the shelves to the left of the trap door area under the mausoleum. The can opener is in a H.O.G. at the air conditioner on the side of Cooter’s house.

10. Use the ice pick on the freezer in the gas station. The ice pick in in a H.O.G scene under the mausoleum.

The H.O.G scenes for the last two are not triggered until after you place the 13 skulls on the pattern in the alligator's nest in the swamp.