‘The problem was he didn’t know when you would die,’ explained Martinez. ‘He really believed you had the CD when you spoke to him on the phone. He didn’t want the police to find you first and take all your things to the police station – including the CD. He wanted it. With Deborah Spencer it was easier. Again Crocker didn’t know when she would die. But once the police had finished at her house, he could send Max round later to get her laptop.’