The Creak on the Stairs by Eva Björg Ægisdóttir 

Chief Investigating Officer Elma, who has returned to Akranes following a failed relationship, and her colleagues Sævar and Hörður, commence an uneasy investigation, which uncovers a shocking secret in the dead woman’s past that continues to reverberate in the present day. But as Elma and her team make a series of discoveries, they bring to light a host of long-hidden crimes that shake the entire community. Sifting through the rubble of the townspeople’s shattered memories, they have to dodge increasingly serious threats, and find justice … before it’s too late.