Carrie is on her way home from work on an ordinary evening, looking forward to seeing her family, when her phone blares: SEVERE ALERT. NUCLEAR MISSILE THREAT TO SOUTH ENGLAND. 59 MINUTES UNTIL IMPACT. SEEK IMMEDIATE SHELTER. THIS IS NOT A TEST. When Frankie and her fiancé get the terrifying alert, they are on their way to a country retreat. Frankie is blissfully and newly pregnant, but her joy is shattered by the realization that there may be no world to bring her baby into. Mrs. Dabb is already spiraling because her 13-year-old daughter is missing. Panicked, she is on a mission to track her down. Then she hears sirens wailing across the moor. Three women, three families, one last chance to be together before the end. All they have is 59 minutes.

Driven by fears and obsessions, Robin Marshall is haunted by what happened to her family when she was a girl. Her only connection to the outside world is through her rear windows and the lives she spies upon in the apartment house across the way. Then a stranger starts pounding on her door. Sarah Marshall, Robin’s estranged twin, has recently lost custody of her child and has set off on her own, hoping that somewhere in England she can find Robin. While Sarah, slowly unraveling, searches for her sister’s hiding place, Robin sees another life hanging in the balance in the lighted windows across the street. It is a life only Robin can save --- as long as she never looks away.

Alex Dale is lost. Destructive habits have cost her a marriage and a journalism career. Then she discovers Amy Stevenson, who was found unconscious after a merciless assault and has been in a coma for 15 years. Unbeknownst to her doctors, Amy remains locked inside her body, conscious but paralyzed, reliving the past. Soon Alex’s routine includes visiting hours at the hospital, then interviews with the original suspects in the attack. But what starts as a reporter’s story becomes a personal obsession. How do you solve a crime when the only witness lived but cannot tell the tale?