DA Greg Willis said that the decision not to seek the death penalty for Chemirmir was guided by speaking to the families of alleged victims within his jurisdiction and with input from senior prosecutors.
Experts say that people often expect serial killers to be socially inept or visibly strange - but often the contrary is true. They have a high degree of social competence and fit in easily.
Investigators say their mothers were killed by convicted serial killer Billy Chemirmir. Now a group of North Texas families is calling on state lawmakers to.