Chaya Lindner is a teenager living in Nazi-occupied Poland. Simply being Jewish places her in danger of being killed or sent to the camps. After her little sister is taken away, her younger brother disappears, and her parents all but give up hope, Chaya is determined to make a difference. Using forged papers and her fair features, Chaya becomes a courier and travels between the Jewish ghettos of Poland, smuggling food, papers, and even people. Soon Chaya joins a resistance cell that runs raids on the Nazis' supplies. But after a mission goes terribly wrong, Chaya's network shatters.

Six hundred and fifty-seven days ago, Meg Kenyon's father left their home in France to fight for the Allies in World War II, and that was the last time Meg saw him. Recently, she heard he was being held prisoner by the Nazis, a terrible sentence from which Meg fears he'll never return. Suddenly, an impossible chance to save her father falls into Meg's lap. After following a trail of blood in the snow, Meggie finds an injured British spy hiding in her grandmother's barn.

Roos Beckman has a spirit companion only she can see. Ruth—strange, corpse-like, and dead for centuries—is the light of Roos' life. That is, until the wealthy young widow Agnes Knoop visits one of Roos' backroom seances, and the two strike up a connection.

Nina, a teenage runaway, wakes up in the unfamiliar stairwell of a Tel Aviv apartment in a torn minidress. As her memory starts to resurface—the abusive older man she’s running away from, the crime she witnessed—she knows one thing: she needs to find a place to hide. When one of the building’s tenants, Carmela, a lonely old widow suffering from memory loss, mistakes Nina for her granddaughter she hasn’t seen in years, Nina jumps at the opportunity for a safe haven. Soon, the two strangers become each other’s lifeline as Nina settles into the apartment with sweet, reassuring Carmela.

In a small, tidy apartment on the outskirts of the frenzied metropolis of Seoul lives Kim Jiyoung. A 30-something-year-old “millennial everywoman”, she has recently left her white-collar desk job - in order to care for her newborn daughter full-time - as so many Korean women are expected to do. But she quickly begins to exhibit strange symptoms that alarm her husband, parents, and in-laws: Jiyoung impersonates the voices of other women - alive and even dead, both known and unknown to her.