“CLOSE THE DOOR AND sit down,” Nathan told Grey and Burke once the two detectives had entered his office. He said nothing more until the pair were seated. “Right, I’ll start with you, Christian,” he said, focusing his attention on the young detective constable. “I don’t ever want to hear you say you don’t have a clue with regards to a case again. I don’t care if your mind’s as empty as a box of air, keep it to yourself, or tell your partner, but only if you’re sure there’s no-one else around. “No matter how much you think you can trust your fellow officers, and I wish it wasn’t true, you can’t. The only person you can trust is your partner. There’s every chance that one of your fellow officer’s will go to the papers with what you say, either for money, because they don’t like you, or sim