An explosion in a house in inner-city Cork sends shock waves through the community. Two people are killed in the blast and, at first, their deaths are believed to be the tragic result of a gas leak - but the victims’ pasts suggest otherwise.

The target is clear: the Dripsey Dozen, a group created by descendants of five local IRA soldiers who were executed for their crimes in 1921.

Despite the surviving members of the Dozen being relocated to safe houses, the bombing continues. Which means a leak at Anglesea Street Garda station is supplying confidential information to this new terrorist.

This is suspended officer DS Katie Maguire’s chance to get back on the force – and stop a traitor from burning Cork to the ground...