Discovery has always been a part of litigation, investigations and regulatory inquiries. The huge volumes of data and the increasing complexity of matters can increase the cost of the e-discovery (discovery of electronic information) to unacceptable levels. In recent years, software companies have been offering the next generation of concept-based search and classification technology: predictive coding or technology-assisted review. The fourth edition in the Forensic Focus series weighs in on the pros and cons of using this approach to manage the discovery process.