If you're on the player page and want to get to the list of all episodes for a show, you have a couple of options. On the player page:
Option 1: Tap the show name. The show page with the episodes list will then display. To get back to the player, then tap the "mini-player" at the bottom of the screen.
Option 2: Tap the "Go to Show" button, next to the show name
Option 3: Tap the three dots in the upper right corner of the page, then tap "Go to Show"