Executive Meddling: The film's original ending made a little more sense, but was changed for overseas prints due to the poor performance in theaters. Yes, the impaled shark ending was used in original theatrical prints.
Money, Dear Boy: Michael Caine only appeared because of it. And later regretted being in the Bahamas shooting it instead of picking up his Academy Award for Hannah And Her Sisters. He's never even seen the film — but he assures that it paid for a lovely house!
Old Shame: Michael Caine generally prefers not to acknowledge his involvement in The Revenge.
Star-Derailing Role: Although she would retire from acting immediately after the film was completed, it was still a sad last effort for actress Lorraine Gary, who got a Worst Actress nomination for her performance.
What Could Have Been: The film was considered to be made in 3D, but worries about the cost of shipping the 3D film cameras to the Bahamas and keeping them working properly in the tropical climate nixed that idea.