THE MOST IMPORTANT EMAIL THAT Darcy Patel ever wrote was three paragraphs long.
The first was about Darcy herself. It skipped the trifling details, her dyed blue-black hair and the slim gold ring in her left nostril, and began instead with a grim secret that her parents had never told her. When Darcy’s mother was eleven years old, her best friend was murdered by a stranger. This discovery, chanced upon during an idle web search, both shocked Darcy and made certain things about her mother...