Once Upon A Time has been on the air for three seasons, and its last season saw a strong increase in its episode ratings, with the season finale garnering the highest episode rating yet, a 9.5 averaged from 855 votes. All of its premieres and finales sit higher than their respective season trendlines too. Its graph is below:
This is not Neilsen Ratings. These are IMDB ratings based on VOTES. So people can vote and S3 was ranked higher for IMDB voters.
Neilsen consistently falls, yes.
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"He was a lot of things to me" "The only conclusion was love"