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 Sementill, 53, guilty of murder and conspiracy for masterminding the murder of her husband Fabio, with special circumstances of murder for financial gain and murder while lying in wait.