On the morning of May 2, 2001, Leslie Preer -- a warm, generous 48-year-old woman who her family said saw the world through rose-colored glasses -- didn't show up to work in Washington DC. Her boss drove to the family home in Chevy Chase, Maryland. Her husband Sandy met him there. When police arrived, they found Leslie on the bathroom floor, under the running shower, having suffered a brutal attack.

From the beginning, investigators focused on Sandy. He failed a polygraph. His behavior seemed odd. The couple had debt, arguments, a history of tension. But the male DNA found at the scene and under Leslie's fingernails was never his. Sandy was never charged. He was also never cleared. In 2017, sixteen years after Leslie's murder, Sandy Preer died -- still, in the eyes of many in his community and even Leslie's own family, a suspect. ...