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? CBS News correspondent Michelle Miller investigates. | CASE UPDATE: On April 11, 2025, a jury found Monica Sementilli, the wife of famed hairdresser Fabio Sementilli, guilty of murder for his 2017 death in which he was beaten and stabbed in their Los Angeles home.
