37 The first thing Nathan did once he was in his office was turn on the coffee machine and get it percolating. The second thing he did was jump out of his skin when he turned to his desk and saw Louisa sitting there. He told himself he shouldn’t be surprised, after all his friend seemed to enjoy catching him out, but he had expected Louisa to be waiting at his sister’s house, whatever time he got home, not sitting at his desk, in his office, in the middle of the police station. He was tempted to ask how she had got there, but decided not to waste his time, she would have talked someone into letting her in; she could be very persuasive when she wanted to be, as he knew. “Special fried rice and prawn balls, from the Red Dragon?” Nathan asked, his eyes going to the bag that sat on his desk

