17 Richard Powers looked drawn and tired when he answered the door to the two detectives. Being familiar with the face before him, having seen one very similar to it in the mirror over the last few months, Nathan felt a surge of sympathy. “I’m sorry to disturb you at this time, Mr Powers,” Nathan said in a sincerely regretful voice. “Have you come to ask me more questions?” Richard asked as he shuffled back in his slippers to give his visitors the space to enter. Nathan shook his head. “No, I think you’ve told us everything you can about both your step-daughter and your son.” He accepted the unvoiced invitation and stepped over the threshold, running his eyes quickly over the distraught father on his way past. “We’ve just come from the hospital,” he said. “I don’t know if you’ve been t

