This was a very intense and tense book.  4.5 stars for me only because the origins of one of the main characters relied too much upon what could be an actual event.  Hit a bit too close.  But other than that, I enjoyed the cultural commentary on the story taking place in Covid. I think it offers a relatability of the thoughts and feelings of the characters and, in future, will offer a snapshot of what living through it was like.  The due timelines build up suspension really well and the multiple perspectives gives such unique authorial voices to the character you are absorbed into the story.  But like all mysteries it is good because of the twists and the red herrings, some you may guess but done well enough it just adds more tension and adds to the story.  Would recommend.