
Marnie has a life-threatening condition. The doctors believe it is in her best interests to be allowed to die, but her loving family disagree. And so begins a fight that will take them through every stage of a legal process, as they struggle to contemplate this huge decision. Who decides? And in whose best interests will it be?
Cast: Sharon Horgan, Michael Sheen, Alison Oliver
Series 1
4 episodes
1. Episode 1As Marnie's health deteriorates, doctors say it's in her best interests to stop care. Defiant, her parents prepare to fight their decision. But doubt soon grows — what is right?15CC57minJun 12, 2023
2. Episode 2Andrew wavers, finding himself at odds with Nicci. With their relationship under pressure, Nicci turns to a surprising place for help. Meanwhile, Katie is torn between her parents.15CC58minJun 13, 2023
3. Episode 3Nicci's campaign becomes national news, causing trouble for Katie. Andrew doubts his choice to leave. With court looming, Nicci’s team need evidence. How far will she go to win?15CC56minJun 19, 2023
4. Episode 4In court, hope for Nicci’s case, and a surprising victory, grows. Andrew is confronted about his past behavior. As the verdict nears, who will get to decide Marnie’s future?15CC58minJun 20, 2023
Best Interests
Marnie has a life-threatening condition. The doctors believe it is in her best interests to be allowed to die, but her loving family disagree. And so begins a fight that will take them through every stage of a legal process, as they struggle to contemplate this huge decision. Who decides? And in whose best interests will it be?
Creators and cast
- Directors
- Michael Keillor
- Created by
- Jack Thorne
- Studio
- AC Chapter One, One Shoe Films
Maturity rating
15Check the rating before watching with younger viewers.
Audio languages
French, English



















































