On Valentine's Day weekend in 2009, Alec and Cathy McNaughton celebrated their love for each other over breakfast. "The morning of February the 15th I got up early; I brought my wife coffee in bed.

This story previously aired on Sept. 8, 2023. On a wintery night near Rochester, New York, retired Detective Marc Liberatore shows "48 Hours" how he helped bring one of the coldest cases in America to ...