Signal Fires, Dani Shapiro’s first novel in 15 years, begins with a horrible ending. It’s 1985 and three intoxicated teenagers go for a car ride that proves fatal. The details of the accident are kept secret—and will haunt one family forever. Decades later, the doctor who ran to the scene of the accident befriends his 11-year-old neighbor, right near the spot where it happened. As Shapiro draws connections between seemingly disparate threads, she creates a moving portrait of guilt, grief, and fate. And she shows, in aching terms, how life is made up of random moments—missed opportunities and curious circumstances—and that it only takes a second for everything to change.