By Tom Pettifor The detective who arrested Wayne Couzens has told of the moment the murdering police officer was nabbed. And Nick Harvey revealed he urged Sarah Everard’s killer to tell him where her body was as he lied about his involvement. Couzens admitted he had snatched the 33-year-old marketing executive from a South London street in 2021 but claimed he handed her over to an eastern European gang. Speaking for the first time about the officer’s arrest, Mr Harvey described the moment he knocked on his door. He said: “All the colour just ran out of his face. He just went grey.” Mr Harvey i…