Officer Philip Cardillo

Friends and family are trying to keep slain NYPD Officer Philip Cardillo's case, and his memory, alive. (Credit: CBS 2)

‘Blue Knights’ Pay Tribute To NYPD Cop Slain In 1972

NYPD cop Phil Cardillo was killed in the line of duty in 1972. Hundreds of police officers are doing what they can to keep the case, and the Officer Cardillo’s memory, alive.

04/10/2011