There isn’t a note of falseness anywhere in The Girlfriend Experience. Every moment is perfectly naturalistic; no actor seems to be acting. Steven Soderbergh recently said “Why do you think you can improve on what’s real?”, and you can feel that philosophy in every frame. This show never lies to you.
Riley Keough deserves a special mention as the actor at the center of it because she’s infinitely watchable while doing what often seems to be very little. It’s eerie when her character goes from her normally unemotive, taciturn self when she’s alone, to turning on the charm for a client. At one point she asks her sister, “Am I a sociopath?” At another in the same episode, a client calls her a “female Ted Bundy”. What she is, though, as a scene in the first episode shows us, is almost painfully herself at all times.
Also, I didn’t realize this until I saw it on IMDB, but she’s one of the girls in Mad Max.