The psychological thriller is called the "scariest" series in CBS's history, "enough to keep the timid audience awake all night". The story describes detectives Beth and Jack from the Los Angeles Police Department's threat Management Unit (Threat Management Unit) investigating and handling "tracking cases." Most of the victims of the "tracking case" are women, and some malicious stalkers are likely to rob them of money (robbery) and sexual assault (sexual assault), and even cause personal injury to them. In other cases, stalkers may pry into the victim's privacy, spy on the victim's sexual behavior, engage in online harassment, or become morbidly infatuated with the victim. -- Tianya Xiaozhu
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