He stopped taking it and all seemed well until the next episode.

He arrived on the planet for a purpose which is not clear until the last episode.

Nothing is not certain until the last episode, but in the end everything ends happily.

It's not until the final episode where they finally fully introduce themselves.

He will not be prominent in the show until the fourth episode.

However, her absence is not explained until the next episode.

She stayed until the first episode of the eighth season.

Until the third episode, we did not even hear Amy's mother's name.

This music theme remained with the show until the last episode.

He was the announcer until the final episode, on December 26, 1986.