A series name plus two useful numbers
Try a search such as The Rookie S7E3. The series, season and episode together identify far more than a bare “episode three.” When recorded episode data exists, open the episode guide to compare the name and air date. A future-season question does not automatically mean those episodes have aired.
Follow the right program
Stargate SG-1, Stargate Atlantis and Stargate Universe are separate series. Likewise, the Danish and American versions of The Killing have separate episode sequences. Choose the production before selecting a season. Otherwise, a perfectly valid number can still lead to the wrong story.
Mark your last completed episode
The checkpoint form records what you enter in this browser. It is a reminder, not automatic playback tracking. Set the last episode you finished and save it. A destination player may separately remember a minute within an unfinished episode.
Recorded air dates help organize a guide; they do not promise that every viewing service carries every episode in every country. After finding your place, confirm the season on the viewing page. For older bookmarks, start with a fresh title search.