DOUG GIACOBBE 

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Author of the Michael Callaway thrillers By Unknown Means  and A Fierce Vengeance

Thank you for visiting my website.  I am happy to announce that my second book, A Fierce Vengeance is now available on Amazon Books. A Fierce Vengeance is the sequel to By Unknown Means, and it will take former U.S. Customs Service Enforcement Agent Michael Callaway into the dark world of revenge. He will learn to break all the rules, and become what he wants to destroy to exact A Fierce Vengeance.

-Doug Giacobbe 




Doug Giacobbe is a retired law enforcement officer, having served twenty-four years working the mean streets of South Florida.  He retired at the rank of Major, and commander of the Criminal Investigations Division of the Miramar Police Department in 2001.  During his service, he was assigned as a patrol officer, narcotics investigator, detective, and internal affairs investigator.

Giacobbe is currently a Professor of History at Daytona State College, teaching courses in American, and American Military History.  He is the author of By Unknown Means, and A Fierce Vengeance, the first and second books in the Michael Callaway series of thrillers.

He enjoys going on trips with his family (wherever there is something historical to see) as well as golf and fishing.  He is a member of Mystery Writers of America, and the Phi Alpha Theta National History Honors Society.

 

A Fierce Vengeance is the sequel to By Unknown Means, and it will take former U.S. Customs Service Enforcement Agent Michael Callaway into the dark world of revenge. He will learn to break all the rules, and become what he wants to destroy to exact A Fierce Vengeance.

Available on Amazon as an eBook now, and in paperback very soon.

BY UNKNOWN MEANS

By Doug Giacobbe

The first book of the Michael Callaway series

Michael is shocked when he finds his ex-girlfriend Carrie in cahoots with one of the world’s most notorious drug smugglers.  Can he take down the mobster and win her back?  Or has she been working undercover all along?  A pulse-pounding blast.

Praise for By Unknown Means
"A Thrilling Read!"

—Joan Johnston, New York Times bestselling author

“Doug Giacobbe wrote with a fast-paced, smooth cadence that drew me into the story and kept me there. His characters were interesting and well thought out - especially the main characters, both good and bad”—Edie Dykeman, Bella OnLine

“This author is up there with the big guys.”

“The action starts right away and keeps going through a well written and thoroughly researched story.”