Ex-NYPD officer from LI talks about reopened probe into '74 killing

Forty years ago, the body of a teenage girl was removed from a school playground in Bayside, Queens. Leslie Zaret, a popular student in a Flushing school, had been stripped naked and strangled. Police pushed the investigation, but after some promising leads, the case went cold. Now the NYPD is trying to jump-start the investigation. Retired detective Mark Valencia talks on Aug. 15, 2014, about his involvement in the case. (Credit: Newsday / Chris Ware)