In "The 6th Target" by James Patterson, the Women's Murder Club is formed with a specific purpose related to solving crimes and uncovering the truth behind various murders. The group, composed of professional women including a detective, a medical examiner, a reporter, and a district attorney, collaborates to solve complex cases that often involve personal stakes and high-profile investigations. Their teamwork underscores the importance of combining different skills and perspectives to bring justice.

As the story unfolds, it becomes clear that the Women's Murder Club is assembled not just for investigative purposes but also to address deeper threats and protect innocent lives. Their collaboration helps to uncover hidden motives, delve into dangerous criminal activities, and ultimately uncover why certain murders happen. The group's formation is driven by a shared commitment to justice and a desire to confront the darker aspects of society.