From IMDB:

The residents of an affluent street in London are busy getting on with their lives, when suddenly something very strange happens. Every house in the street has an identical, mysterious postcard pushed through their letterboxes that simply states “WE WANT WHAT YOU HAVE”. At first, the residents of Pepys Road dismiss the notes as some sort of marketing campaign but gradually as events begin to escalate it becomes clear that there is something more to this strange occurrence than something as mundane as that.

From Acorn TV:

Based on John Lanchester’s bestselling novel, this complex and resonant drama starring Toby Jones and Rachael Stirling is a “beguiling” (The Daily Telegraph, UK) and “alarmingly recognizable” (The Times, UK) depiction of contemporary life in England’s capital city.

From Acorn TV you can stream the 4 episodes of the one season complete story.  Each episode is about 45 minutes.

Five subplots associated with the same block in London are involved:

• Ahmed’s Pakistani family runs the corner grocer. One of his brothers is falsely accused of terrorism.
• Roger (Toby Jones) is an investor with a ridiculing wife.
• Mary (Lesley Sharp) looks after her ailing mother Petunia (Gemma Jones).
• Bogdan is a Polish is a building contractor who falls in love with Roger’s nanny. He is renovating Petunia’s residence because Petunia dies and Mary wants to sell.
• Quentina, the neighbor auxiliary policewoman, has VISA problems.

Lesley Sharp played DC Janet Scott in the enjoyable series “Scott and Bailey”.  Gemma Jones, who was 73 during the production, has a huge resume including playing Claire Slater in the TV series “Unforgotten”.

Almost every subplot, except for one real tragedy, ends happily. Fearing the worst, I was almost afraid to watch the fourth and final episode.  Well worth the watch!