Here's a spoiler, for a 40 year-old series - VIDEO
I've never seen an episode of Coronet Blue. It was on television two years after I was born, it only lasted one season, and I don't think it has been repeated much in the past 40 years (and it's certainly not on DVD yet). But I've always been intrigued by it, since it had to do with a man (Michael Alden, played by Frank Converse) who climbs out of the water and has no memory of who he is or what he has done, only that people are after him. He has one clue, the words "coronet blue" that keep repeating in his head. Very Fifth Corner/Bourne Identity-ish.
Unfortunately, the show only lasted one season, so fans never found out what the answer to the mystery was, who this man was and what those mysterious words meant. But now comes the answer...
In a bio of the show's creator Larry Cohen, Cohen revealed what the words meant and who Michael Alden was:
"When the Brodkin Organization took over the series, they wanted to turn it into an anthology... so they played down the amnesia aspect until there was nothing about it at all in the show. It was just Frank Converse wandering from one story to the next with no connective format at all. Anyway, the show ended after seventeen weeks and nobody found out what 'coronet blue' meant. The actual secret is that Converse was not really an American at all. He was a Russian who had been trained to appear like an American and was sent to the U.S. as a spy. He belonged to a spy unit called 'Coronet Blue.' He decided to defect, so the Russians tried to kill him before he can give away the identities of the other Soviet agents. And nobody can really identify him because he doesn't exist as an American. Coronet Blue was actually an outgrowth of 'The Traitor' episode of The Defenders."
Here's the title sequence for it, via Lee Goldberg's site: