The Ancient Key is an item from Freddi Fish 3: The Case of the Stolen Conch Shell.
Freddi Fish 3: The Case of the Stolen Conch Shell
Freddi will help to get Luther out of the trap with the Ancient Key the statue holds. In order to get it, she must use one of the three crystals (red, blue, or green) to disarm the trap within the statue. She then uses the key to free Luther and catch the thief who stole the Conch Shell.