You know when you are watching a play, and you become acutely aware of how an actor is moving around the stage and what they are doing with their hands. It feels conscious and, as a result, distracting.
This was how Walden started. I felt like I was watching a series of acting and directing decisions rather than a story. Maybe it was nerves, this being early in the run.
But it wasn't the only distraction.
Amy Berryman's debut is set in the near future when the earth is either beyond saving or savable with radical lifestyle changes - depending on your perspective.
Those in the former camp are in the process of setting up alternative places for humankind to live on the moon and potentially mars.
Twin sisters Stella (Gemma Arterton) and Cassie (Lydia Wilson) started on the same path. They followed their late astronaut father into working for NASA but for reasons only gradually revealed, Stella has turned her back on science and space.
A life less scientific
She now lives a simple life with her fiance Bryan (Fehinti Balogun) in a cabin in the woods. They grow their own food, and Stella works in the local bar.
Bryan is 'Earth Advocates' an activist organisation determined to show that the planet will heal itself by living with minimal environmental impact.
Cassie, meanwhile, has just returned from a year-long moon mission to great acclaim.
Invited to the cabin, it is quickly obvious this isn't going to be a relaxed and fun sibling reunion.