An attractive divorcee, Susan Foxworth, has become the target of malicious & vindictive stalking from her psychopathic ex-husband, Gary. Despite her repeated complaints to the police, they state they are powerless to act until her ex does something to harm her or her children. Susan turns to Robert McCall for help, who discovers some chilling facts about her ex-husband's past. When the psychopathic ex finds out that McCall is working for Susan, he breaks into her home in the hope of killing her, but McCall has set a clever trap for him...

When a former protege of McCall's is murdered, he vows to seek out those responsible. His subsequent investigation, however, reveals that she may have been involved in criminal activity following her departure from The Company.