Carlotta is frantic. It appears that Paolina, a street-smart teenage girl she's always thought of as a little sister, has run away. After dead-end investigations throughout Boston, Carlotta fears the worst. Especially when she connects the disappearance to Paolina's biological father, Roldán Gonzales, a ruthless Colombian drug lord. To find Paolina, first Carlotta has to find Gonzales-but he's vanished too. The official report is that he's dead. Warned against going to the police in Bogotá, Carlotta must trust her instincts as she follows in Paolina's footsteps, which lead to the mountains of Colombia-Sierra Nevada de Santa Marta, the heart of the world. But will her rescue end up being a trap?