Given the well known actors involved in this drama, I had high hopes and they were not disappointed. All of the main characters were played fantastically well and it felt real. My mum has Alzheimers and I did wonder whether I would be "up" to watching something that was obviously so close to home, but the illness as a main strand of the story was treated with sensitivity and humour. Jim Broadbent was amazing in the role as the ill dad, and John Simm and Olivia Colman were both fantastic in their roles as wayward son and put upon daughter. The mystery surrounding the sudden departure of Tom to London 18 years earlier developed well as the storyline moved on. Similarly to another reviewer I did think that the ending was somewhat hurried, but all of the loose ends were well and truly tied, and it didn't detract from the overall quality. I'll be making a DVD purchase when it's released.