There has been some criticism that this is 'slow', I disagree and would describe it more as 'studied'. Tom Hollander is fantastic as usual and it was lovely to see Sophie Grabol again. The storyline is engaging for the most part, despite the self centred son and wife, but I must admit I fast forwarded most of the flashback scenes which I found a bit boring.
It's actually a very considered depiction of an introvert in an extrovert's world