The Darkness by Ragnar Jónasson

This novel grabbed my attention because of its protagonist. A 64yo female detective about to retire who decides to investigate the death of Russian asylum seeker. The girl's death had been dismissed as suicide but the detective is not sure about that. 

First time I read about an old female detective. The novel has everything, her (old fashioned) detective work, past trauma and the psychological effects of her imminent retirement. She cannot imagine life without her job. A super interesting protagonist, a gripping murder mystery and a quick read.