A slumlord is hard to stop due to his connections, but McCall is determined to help the Whittaker family, and in the process, the other people being exploited.

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...