"It's Rob's first day in his new job. On the way into work, he sees a student throw herself under a tube train. Acting on an impulse, he picks up a file she dropped as she jumped. Over the next few days, he's witness to other disturbing events, some more serious than others. From each one he takes a 'souvenir'. As his behaviour becomes increasingly obsessive, he crosses the line between witnessing disasters and seeking them out, and events begin to spiral out of control."--BOOK JACKET.