The Nina Borg Series


A New York Times Bestseller

New York Times Book Review Notable Crime Book

Nina Borg, Red Cross nurse, wife, and mother, is a compulsive do-gooder who can’t say no, and when she finds a young boy naked, drugged, and stuffed inside a suitcase in public locker in the Copenhagen train station, Nina gets sucked into her most dangerous project yet.

“Here’s something you don’t often see in Nordic noir fiction—a novel written by two women about the criminal mistreatment of women and children, compassionately told from a feminine perspective and featuring female characters you can believe in.”

The New York Times Book Review

“Written in that sparse, uniquely Scandinavian style sure to draw comparisons with a certain blockbuster trilogy (this is better), this story packs plenty of emotional suspense and interpersonal friction without veering into melodrama.”

Associated Press

“A frightening and tautly told story of the lengths to which people will go for family and money.”

USA Today


Red Cross nurse Nina Borg puts her life and family on the line when she tries to treat a group of Hungarian Gypsies living illegally in a Copenhagen garage. What are they hiding, and what is making them so sick? Nina is about to learn how high the stakes are among the desperate and the deadly.

“The Danish authors Lene Kaaberbøl and Agnete Friis have written another disturbing exposé of social injustice in Invisible Murder.”
New York Times Book Review

“Kaaberbøl and Friis describe this broken and terrifying world with the measured cadence of a network news anchor. From their report, civilization had a good run, but its lights are winking out.”
The Baton Rouge Advocate

“Tense and twisty.”
The Sacramento Bee

“This pair’s debut, The Boy in the Suitcase, grabbed me, and so did Invisible Murder.”
The Charlotte Observer


BBC Front Row Best Crime Novel of the Year

A Publishers Weekly Top 10 Mystery of the Year

A Book Page Best Mystery/Thriller of the Year

Natasha Doroshenko, a Ukrainian woman convicted for the attempted murder of her Danish ex-fiancé, escapes police custody, and that same night, the ex-fiancé’s tortured corpse is found in a car. Nina Borg is convinced she’s no killer, but Natasha’s history conceals a secret with bloody roots reaching back to Stalinist Ukraine.

“[Nina] joins the sisterhood of run-amok heroines like Homeland’s Carrie Mathison and Lisbeth Salander of The Girl with the Dragon Tattoo.”

NPR, Fresh Air

“Feminist outrage fuels the politically pointed novels of the Danish writing partners Lene Kaaberbøl and Agnete Friis . . . Nina is all heart and her efforts to bring justice to women like Natasha are heroic.”

New York Times Book Review

“[Kaaberbøl and Friis] tell a socially conscious—and, at times, critical—tale about immigration issues that apply both to Denmark and the U.S. without sacrificing the urgency of the best thrillers.”

“Nina is an imperfect hero, which makes her all the more appealing.”

The Boston Globe


In an attempt to save their marriage, Nina Borg and her husband traveled to a resort in the Philippines. Months later, she is attacked outside a grocery store, and the last thing she hears before losing consciousness is her assailant asking her forgiveness. As Nina traces the origin of that sinister message, she realizes the attempt on her life can be traced back to Manila.

“One of the most distinctive characters in contemporary fiction.”

Los Angeles Review of Books

“Powerful . . . As in previous installments, Kaaberbøl and Friis tackle social justice issues head-on.”

Mystery Scene

“If this indeed is the finale, the series will end on a high-flying note . . . We have four fine books in a series that demands to be read and re-read.”



“Chilling and startling . . . A very satisfying conclusion to a gripping series..”

– Fresh Fiction’s Fresh Pick