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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

Goodreads Rating

4.5 (38)

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...

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In The Dark Of Night

Blood Of The Innocent

Douglas J. Hagmann - Apr 22, 2021

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4.9 (9)

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