police officer forged paperwork which helped convict a drug dealer.The Scottish Criminal Case Review Commission (SCCRC) probed Gerald Lafferty jnr’s case after he was jailed for trafficking heroin.It had been claimed by a whistleblower that assistant chief constable John Neilson tampered with documents following a raid on his home.Officers swooped on Lafferty’s property hoping to find his father, also Gerald, who was wanted for a multimillion-pound bank robbery.However, they discovered a large