The Insidious In-law
Season 1 • Episode 11
Greg Markwardt kills his sister-in-law, Kathy Odom, in 1987. He remains free for nearly two decades, but new DNA techniques allow a lamp cord from the scene to be tested, proving his DNA to be a match and forcing his arrest and subsequent conviction.
43 min|TV-14|Premiered 08/21/2012