44 ‘Butterfly was the name he gave to Erin,’ Jess tells me. ‘I’ve been doing a lot of digging on Tom. I’ve spoken to his old friends. His family. I know I should leave well alone, but I needed to know. I needed to uncover everything, so I could warn people whose life he comes into.’ This all sounds weird to me. Obsessive, almost. ‘Why not just use your job? Have him arrested?’ ‘There’s no evidence of any illegal activity. He’s very clever.’ ‘What about this?’ I say, unzipping my coat to show her the marks on my neck. ‘Was that him?’ She asks. I nod. ‘We can log that for you if you want. But I doubt it’ll do much good. It’ll be your word against his, and it’s extremely unlikely anything will be done about it. Even if it is, he’ll get off with a warning and a free pass to do whatever he

