Enjoy your Fringe marathon!
The first season of Fringe (2008–2009) marks the beginning of an expansive science fiction odyssey created by J.J. Abrams, Alex Kurtzman, and Roberto Orci. It introduces the "Fringe Division," a joint task force of the FBI and Homeland Security investigating a series of bizarre global events known as "The Pattern". Season 1 Core Cast and Premise
It sounds like you’re looking for a , specifically with an eye toward understanding its episode index or how the season’s links (narrative threads, mytharc episodes, and standalone cases) hold together.
Even non-mythology episodes often contain character development or hidden links: