Best Interests is a four-part British television drama series, written by Jack Thorne.
[1][2] It stars Sharon Horgan and Michael Sheen as a married couple, fighting for their disabled daughter's medical care.
[3] 13-year-old Marnie (Niamh Moriarty) has a rare form of muscular dystrophy that was diagnosed when she was a baby.
When she ends up in intensive care after a chest infection, Marnie's doctor Samantha questions whether her treatment should be continued.
Marnie's parents, Nicci (Sharon Horgan) and Andrew (Michael Sheen), fight to have her treatment continued but are driven apart by conflicting attitudes towards the battle.