Rear Window, pandemic movie

He's stuck inside with a broken leg, so he has to self-isolate apart from visits by Grace Kelly, his friend and his nurse. He watches his neighbours a lot. They rarely leave the building. They exercise there and party there. When one of them does go out, it in at a time when everyone else stays in. He has a secret and needs to conceal it from people in close proximity. Meanwhile another neighbour's tragedy is nearly overlooked as she lies dying. All the while the fancy people are having a party in the musician's flat. They do of course eventually work out they have a killer in their midst and stop him, although at the cost of a second broken leg.

Do watch it if you haven't. It is excellent and although it is not about COVID-19 it may as well be.