This is the story of a handful of people who find themselves living through an unfolding catastrophe. Elliot is a first responder in New York, a man running from past failures and struggling to do the right thing. Emma is a pregnant singer preparing to headline a benefit concert for victims of the outbreak--all while questioning what kind of world her child is coming into. Owen is the author of a bestselling plague novel with eerie similarities to the real-life pandemic. As fact and fiction begin to blur, he must decide whether his lifelong instinct for self-preservation has been worth the cost. As the novel moves back and forth in time, we discover these characters' ties to one another and to those whose lives intersect with theirs, in an extraordinary web of connection and community that reveals none of us is ever truly alone. Linking them all is the mystery of the so-called ARAMIS Girl, a woman at the first infection site whose unknown identity and whereabouts cause a furor.