Dr. Jamie Houseman is investigating a mysterious atomic event that occurred seventy-three years ago, when scientists and Hollywood producers came together in a daring experiment to transform characters in a radio show’s last episode, live on air, into their most irreducible, atomic personae of what will be a beloved American TV comedy. But what happened when the machine began to leak? What does it mean for us? And what does Jamie’s neighbor, somehow, impossibly, remember?