In order to prevent Ivan Shark realising that his hideout may be found, Captain Midnight had an actor imitate his voice at Ridgeville during the negotiations with Shark. During this, Captain Midnight and his friend listened in from their plane as they winged their way northward towards where they think that Shark is. Patsy Donovan wrote down every work that Chuck said, and almost immediately after the conclusion of the conversation, she explained excitedly that she had Chuck's complete secret message!