Stephan Smerk, a married father in Niskayuna, New York, turns himself in for the cold case murder of artist and mother Robin Lawrence in Springfield, Virginia.
When Stephan Smerk called Fairfax County Police Detective Melissa Wallace on Sept.7, 2023, she was shocked to hear what he had to say.
"He says, I'm at the police department to turn myself in," Wallace told "48 Hours" correspondent Anne-Marie Green, ... [7613 chars]