Douglas J. Hagmann has been a licensed investigator in the private sector for the last 30 years. As a private detective, Hagmann has worked well over 5,000 cases and is recognized as a surveillance specialist. He has worked as an informational and operational asset for various federal and state law enforcement agencies. Doug Hagmann is the host of the popular radio and video talk show called The Hagmann Report. Even though Hagmann’s first book, “Stained by Blood”, was a great success, his new book, “In The Dark of Night”, is his best piece of writing to date.