Just published and now available:
The Secrets of Medjugorje and Garabandal Revealed, fourth edition [Kindle Edition]
This fourth edition has revised dates and events for a number of the secrets. This book describes the first part of the tribulation based on the apparitions and messages of the Virgin Mary at Medjugorje and at Garabandal.
UPDATE: now available in print as a paperback book at Amazon.com