As MI5 and the RUC move to dismantle the IRB’s hidden arsenal, a dangerous game of cat and mouse unfolds. At its centre is Dinah Finnerty, a young woman who has spent her life unseen—until now. With a past that ties her to some of the city’s most ruthless players, Dinah is on a path that could shatter everything.

Jones, struggling with his own demons, is forced to confront the cost of unfinished business. Reunited with an old shipmate and haunted by the fate of Jube Spencer—presumed vanished—he follows the trail deep into Belfast’s underworld, where the lines between truth and betrayal blur.

Some wars never end. Some secrets refuse to stay buried. And in the tunnels beneath the city, the past is waiting to explode.