Danny Coogan is now working as a US Marshal, and he is within weeks of becoming a father for the first time. During a takedown of a fugitive, he makes a grisly discovery: a body, and it’s the son of someone he knows and works with. Thus begins an off-the-books investigation that leads him to millions of dollars in stolen money, an entire collection of dead bodies, and an ultimate showdown with an adversary determined not to be taken alive. $7.99 on Kindle.
"Frontier Vengeance: A Coogan Mystery (Frontier Series Book 4)" by Michael Cardwell was first posted on freebookpromotions.com on February 24th, 2026. Each day we feature new free and discounted Kindle books in the Mystery, Thriller & Suspense genre as well as all other genres.
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