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Be Your Own Private Investigator

Through A Marshall's Eyes: Be Your Own Private Investigator

Hey, I’m Derrick. I’ll teach you how to act as your own private investigator.

Learn from my 29 years of experience as a Private Investigator how to act as your own Sleuth.

Derrick Marshall, Private Investigator
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Through a Marshall’s Eyes: Be Your Own Private Investigator

Private Investigator Derrick Marshall uses his experiences to teach the techniques of the PI trade.

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Derrick's book helped me understand the methods commonly used by by profession Private Investigators. This literally saved me thousands of dollars I would have spent investigating my (now ex-)husband! Denise, Florida

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Derrick Marshall has over 30 years of experience in the Private Investigation industry. Learn more …

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This book is a life saver. I have a very abusive ex who I believed was stalking me. I was able to use techniques I learned from the book to catch him in the act of violating a protection order and he's now in prison. Janet, Springfield, MO

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