Reseda Rose - S1-E6
Revealing mistake: During the meeting on the beach, while Bill remains on the hill Ralph flies to the surfaced submarine, and in Ralph's closeups on the sub the crinkled black set wall behind him is painfully obvious.
The Greatest American Hero (1981)
1 revealing mistake in season 1 - chronological order
Starring: Michael Pare, Robert Culp, William Katt, Connie Sellecca, Don Cervantes
The Greatest American Hero (1) - S1-E1
Continuity mistake: In one scene, Ralph is in a phone booth desperately trying to make a phone call. Ralph is nervous and panicky. But when you look at his reflection on the phone, you can see a big relaxed smile on him. When it cuts back to him, he is still acting nervous and panicky.
Ralph Hinkley: Bill, I've got an idea.
Bill Maxwell: Good, put it to me in a letter, I'll try to get back to you by the end of the month.