After solving her first murder and leaving the Helsinki Police Department behind, Maria Kallio thought that a move to the neighboring city of Espoo would signal a fresh start - a chance to not only put her new law degree to use but to nurture her budding romance with Antti Sarkela. But when she discovers the strangled body of a new acquaintance, old habits die hard for the redheaded sleuth - especially since the accused is not only the victim's fiancé but a member of Antti's family. Though she works as a legal counselor, Kallio soon finds herself unofficially investigating the murder, now labeled a sex crime.

When Petri Ilveskivi is murdered in the street on his way to a city-planning meeting, Maria Kallio, commander of Espoo's Violent Crime Unit, and her team are first on the scene. Almost immediately, her focus is on the band of skinheads who brutally attacked the Finnish commissioner and his husband three years earlier. Did they finally finish the hate crime they started? But the trail soon reveals a web of lies - secrets Petri was keeping from even those closest to him - and a long list of suspects.

A grievously mutilated young woman arrives at the hospital in Espoo, Finland - only to vanish without a trace. Though the victim refused to identify herself, Violent Crimes Unit Commander Maria Kallio suspects she's connected to the city's sex-worker underworld. The next day her suspicions grow when celebrity call girl Lulu Nightingale is murdered during a live television broadcast. The victim's clients included some of the top names in Finnish society, but the list of suspects is longer: her infatuated bodyguard, a suicidal TV producer, and a talk-show host with political aspirations.

After completing a dangerous mission training police officers in war-torn Afghanistan, Detective Maria Kallio returns to Finland as the head of a new special crimes unit. But what awaits her in her home country is her most challenging and unsettling case yet. Three immigrant Muslim girls, all members of the same social club, have gone missing under mysterious circumstances. When the body of a fourth girl is found in the snow, strangled with her own headscarf, the investigation takes on a grim new urgency. 

After surviving a terrifying assault during her last investigation, Maria Kallio traded in her badge for a comfortable desk job. But when the head of social affairs for the Finnish Athletics Federation is murdered - the victim of an apparent poisoning - Maria is drawn back into a race against more than murder. A series of crimes has unfolded, and to Maria’s trained eyes, they look like the makings of a conspiracy. As Maria follows the track to a doping scandal, a money-laundering scheme, domestic abuse, and explosive death threats leveled against a sports reporter, she collects the pieces of a baffling puzzle.