The brutal killing of middle-aged supermarket shelf stacker Regina Steps is shocking to all who knew her. Regina might have kept herself to herself, but she always had a smile for everyone she came across. Who could possibly have wanted to do her harm? As mundane as Regina's life might have seemed on the surface, her murder is anything but: she's been strangled, posed atop a cannon on Derry's historic city walls, and stripped of her clothing and dignity. When seasoned DI Liam McLaughlin arrives at the crime scene, he realizes he has never seen anything like it in all his years at the Serious Crimes Branch of the Police Service of Northern Ireland. Searching the crime scene further, McLaughlin and his ragtag team uncover even more chilling details that suggest a deranged killer is loose on Derry's streets. And as they delve deeper into the checkered life of Regina Steps, they uncover shocking truths she kept well hidden under that bad perm of hers. Could it be she got what she deserved, her just desserts? But then a second body turns up...