Do you know someone who is a Jehovah's Witness? Have you ever questioned how and why a person becomes a member of the Watchtower Society? Are you ever frustrated, hopeless, or angered because you cannot reach them with the Gospel? In her breakthrough book, Knock, Knock: Shedding Light on Jehovah's Witnesses at the door, born-again author Ruth Baker uses her twenty years of experience as a Jehovah's Witness to unveil the mystery of this obscure cult. This shocking testimony will not only equip Christians to properly protect themselves, their families, and friends from the unseen forces of darkness, but will also challenged them to boldly defend the truth with confidence and love. This book is an essential weapon in preparing for the next Knock, Knock.