I like Costner as an actor and as a director. Something bad happened with the directing of “Horizon”.
The characters were never fully developed. The theme is never grasped until about an hour into the movie.
Plenty of well known actors with little if any character development.
The last minutes of the film show what seems to be edited clips from future chapters shown in a rapid, disorganized manner.
I rate this film at 3 out of 10. Not sure if I will watch the future chapters based on this first one.