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AuthorsDouglas Hagmann

Douglas Hagmann Books

Douglas J. Hagmann has been a licensed investigator in the private sector for the last 35 years. As a private detective, Hagmann has worked well over 8,000 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. Hagmann is a certified forensic blood spatter analyst.He is the author of Stained By Blood, A Murder Investigation and his latest, In The Dark Of Night, Blood Of The Innocent.
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Stained By Blood
A Murder Investigation
Douglas J. Hagmann - Mar 07, 2016
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Private Investigator Marc Stiles has taken on a cold case murder investigation at the request of the victim’s family. His own family. The case could not be more personal for Marc, whose uncle was found brutally stabbed in a frenzied killing that took place in the very home of Marc’s youth, and in the very bedroom where Marc had fostered memories of...
In The Dark Of Night
Blood Of The Innocent
Douglas J. Hagmann - Apr 22, 2021
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