The Innocent by Taylor Stevens

Vanessa Michael Munroe is asked by her best friend, Logan, to rescue his teenage daughter Hannah from a cult in Argentina. Years ago, Hannah was kidnapped by her mother's boyfriend and taken back to the cult (after a series of escapes). Hannah's days consist of menial chores, praying, and being the plaything of a powerful local man, Mr. Carcan. She has hardly any memories of her real parents. With help from Munroe's friend, Bradford, they pinpoint the cult's locations around Buenos Aires and set up listening devices. Munroe then goes undercover within the cult. But suddenly, Munroe's plans have to quickly change and she has little time to rescue Hannah... The Innocent is the second book in the Munroe series and, while good, can only pale in comparison to the first, The Informationist, which is one of the best books I've read this year, because of its originality and fast-paced storyline. It will be published later this month.