"Cocoon" was first aired on television September 20, 1968.
Anyway - As the story goes - After McGarrett's friend, a U. S. intelligence agent, is found dead on a beach, the Feds decide that the agent died in a swimming accident. But Steve - knowing his friend did't swim - decides to open his own investigation.
Following a shadowy trail of clues and cover-ups, McGarrett's investigation of his friend's death leads to a mysterious ship... and a menacing villain: criminal mastermind Wo Fat.
Anyway - As the story goes - After McGarrett's friend, a U. S. intelligence agent, is found dead on a beach, the Feds decide that the agent died in a swimming accident. But Steve - knowing his friend did't swim - decides to open his own investigation.
Following a shadowy trail of clues and cover-ups, McGarrett's investigation of his friend's death leads to a mysterious ship... and a menacing villain: criminal mastermind Wo Fat.