Gun street girl. Adrian McKinty. 2015.

A wealthy couple arenshot dead while watching TV. Their son jumps to his death, leaving a note claiming responsibility. But something doesn’t add up, and people keep dying.

Soon Sean Duffy, Belfast’s most roguish detective, is on the trail of a mystery that will pit him against shadowy US national security forces, and take him into the white-hot heart of the biggest political scandal of the decade.