Where is the key in Scooby Doo and Hollywood horror?

The key in "Scooby-Doo on Zombie Island" is not actually a key, but a skull**.

The "key" is a skull that needs to be placed in a socket on a statue. This activates a hidden passageway that leads to the treasure.

Let me know if you have any other Scooby-Doo mysteries you want to discuss!