From the Nordic noir duo who brought you The New York Times bestseller The Boy in the Suitcase comes a chilling new thriller with a mystery seventy-years in the making.

Nina. Natasha. Olga. Three women united by one terrifying secret. But only one of them has killed to keep it.

Natasha Doroshenko, a Ukrainian woman who has been convicted for the attempted murder of her Danish ex-fiancé, escapes police custody on her way to an interrogation in Copenhagen's police headquarters. That same night, the ex-fiancé's frozen, tortured body is found in a car. It isn't the first time the young Ukrainian woman has lost a partner to violent ends: her first husband was murdered three years earlier in Kiev in the same manner.

Danish Red Cross nurse Nina Borg has followed Natasha's case for years now, ever since Natasha first took refuge at her crisis center. Nina just can't see the young mother as a vicious killer. But in her effort to protect Natasha's daughter and discover the truth, Nina realizes there is much she didn't know about Natasha and her past. The mystery has long and bloody roots, going back to a terrible famine that devastated Stalinist Ukraine in 1934, when a ten-year-old girl with the voice of a nightingale sang her family into shallow graves.