After three similar murders, Austin, Texas, police began to wonder if a serial killer was on the loose -- did a man out for a late-night walk testing his new thermal imaging night scope capture images of the actual killer? "48 Hours" Maureen Maher previews an all new "48 Hours" airing Saturday at 10/9c on CBS.
Air Date: Mar 15, 2019
Saturdays 10/9c