I am just imagining this - from the future.
Shots of an empty desert in black and white and ambient outdoor noise
then more empty desert and footsteps
still more empty desert and a dark music tone
Voice Over as more shots of familiar places, still in black and white: "Caucasian Female, 30s or 40s, blonde hair, no ID, hands bound behind back with an extension cord, two bullet wounds in the back of the head........no attempts to dispose.........., looks like a message to me."
Voice Over 2 "A message for who?"
Music tone comes to a sudden stop quick edit to a hand with dried blood on the ground as the shot turns to color
Caption reads "Better Call Saul: Series Finale: Monday at 9"