Binge watched this after seeing an interview on BBC Breakfast. The story very gradually unravels over the 6 episodes and I found myself gripped after the first one. The lead role is brilliantly played. She is slightly bonkers whilst being very sharp and clever. The plot covers so many issues; dementia, death, OCD, addiction, etc. But the mmain thrust is the effect social media can have on someone. It's a sad tale but worth watching!