James McAvoy and Sharon Horgan are brilliant in this exploration of lockdown dynamics. Writer Dennis Kelly uses the camera, and therefore the audience, as a kind of silent therapist for the characters, a married couple who may be are or may be not at the end of their relationship. There are some bravura solos and duets, carefully charted by director Stephen Daldry. The whole thing is both highly artificial and entirely natural, a real triumph for all concerned. I had a couple of reservations about one of Horgan's monologues -- the writing, not the performing -- in that it felt a bit more like a newspaper column than a speech, but that apart I was grateful for the sheer quality of what I was watching. It's a relief to be treated as an adult.