Podcast:48 Hours Published On: Sun Sep 09 2018 Description: A famed Los Angeles hairstylist is killed in his backyard -- was it a robbery gone wrong by thugs called the knock-knock burglars or a twisted plot no one could believe? Correspondent Michelle Miller investigates.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.