Great question! I did a bit of research and found this http://wojdylosocialmedia.com/symbols-ozark-o-netflix/

Not only

• are the images at the beginning of each episode foreshadow four primary happenings in that episode; but

• they also each resemble the letters Z A R K within the big letter O, thus completing the show title, OZARK.

Pretty darned cool!

Cool.............

It took me about 7 episodes but I finally figured out they were foreshadowing images... which is a pretty awesome Easter egg. Such a great show and can't wait for Season 2.

Took me a little while to realize each episode was different. I think it was midway when it clicked. I thought they were doing a GoT where the opening sequence foreshadows the episode.