Los Angeles in 2050 is a city of open doors, as long as you have the right connections. That connection is a djinni -- a smart device implanted right in a person's head. In a world where virtually everyone is online twenty-four hours a day, this connection is like oxygen -- and a world like that presents plenty of opportunities for someone who knows how to manipulate it. Marisa Carneseca is one of those people. She might spend her days in Mirador,...