A Close Look Into How an Accused Killer Gained Access to Women's Homes

Billy Chermirmir is charged with killing at least 12 women. Authorities say he posed as a maintenance worker or health care provider to gain access to the women’s apartments. Police say he robbed and killed them. The Dallas Morning News’ Charles Scugger spoke with the daughter of one of Chermirmir’s alleged victims and talks about the two-part series “Guardians.”