England, 1969. The fascinating Abbie and the troubled Lydia are great friends. After an unexpected tragedy occurs in the strict girls' school they attend, a mysterious epidemic of fainting breaks out that threatens the mental sanity and beliefs of the tormented people involved, both teachers and students.

Mike Hoolihan is an unconventional New Orleans cop investigating the murder of renowned astrophysicist Jennifer Rockwell, a black hole expert found shot to death in her observatory. As Mike tumbles down the rabbit hole of the disturbing, labyrinthine case, she finds herself grappling with increasingly existential questions of quantum mechanics, parallel universes, and exploding stars. The hunt for a killer draws a detective into an even larger mystery: the nature of the universe itself.