I work as a stalker. Believe me or don't. And no, I don't call myself that because it sounds dramatic. It's simply the most accurate description of what I do. When I tell people about it, one of two things usually happens. Some laugh because they think I'm joking. Others start asking questions I have no intention of answering. Almost everyone imagines the same thing - some guy in a hoodie standing outside his ex-girlfriend's window at night, taking pictures on his phone and sending hundreds of messages. Reality is much more boring than that. That's exactly why it works. If the person you're watching knows you exist, you've already done something wrong. No chases. No men in black suits. No tinted cars sitting across from the same apartment building for a week. Most of the time, nothing happens at all. You just slowly learn somebody else's life. At first it seems chaotic. Then you start noticing repetition. Everyone has it. One person buys coffee from...