I believe there were actually about five partners for Steed
Diana Rigg as Mrs. Peel was the only one that really fit the part and got the best response
There were also a number of theme songs - The one we got here was the best and final one
"Tara" never seemed to make it as Mrs. Peel's replacement
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Secret Agent was the title of McGoohan's TV show for America -
Not the original UK title
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"The Prisoner" also went thru several theme song versions - It ended up here with the best one
McNee was Mother's agent in "The Avengers" and Mcgoohan was the "Secret Agent" and "The Prisoner".