These are the list of TV series that can help you to become a detective or a private investigator. The Mentalist A famous "psychic" outs himself as a fake, and starts working as a consultant for the California Bureau of Investigation so he can find "Red John", the madman who killed his wife and daughter. https://www.imdb.com/title/tt1196946/?ref_=fn_al_tt_1 Sherlock A modern update finds the famous sleuth and his doctor partner solving crime in 21st century London. https://www.imdb.com/title/tt1475582/?ref_=fn_al_tt_1 Lie to Me About Cal Lightman, the world's leading deception expert who studies facial expressions and involuntary body language to expose the truth behind the lies. https://www.imdb.com/title/tt1235099/?ref_=fn_al_tt_1