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Clandestine is the final book in the UNDISCLOSED trilogy by Jon Mills
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An unknown airborne disease that kills
A dangerous government agency
And one hope for mankind
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Clandestine continues the ageless war between the Guardians and the Watchers with a new enemy that threatens to eliminate both sides, even if it means spreading an airborne disease that could wipe out civilization.

After escaping near death in Peru and preventing the destruction of humanity, Travis Marshall struggles to find a way to save Jayde and uncover the truth behind the agenda of the shadowy government agency known as ONE.

When Travis receives a series of mysterious packages from an unknown ally who promises to help, he must decide who to trust before it's too late.

Loyalties will be questioned, new allegiances will be formed, and secrets will finally be disclosed as he faces his greatest challenge yet.

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First published December 23, 2014

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About the author

Jon Mills

22 books157 followers
International Bestselling Author Jon Mills is from the UK but resides in Canada. He's had multiple titles hit #1 in Police Procedural, Mystery and Thrillers, Pulp Thrillers, Kidnapping, and Heist Thrillers. His work includes the Jack Winchester thrillers, 50 States of Murder thrillers, I'm Still Here, the Undisclosed trilogy and The Promise. In addition to this he has numerous books published under different pen names that cater to different genres. His latest is called Lost Girls: The Maine Murders (50 States of Murder)

Join Jon's spam-free readers list to stay alert to future releases, special offers, and reader only bonus content. The readers group are usually the first to hear about giveaways. http://jonmills.com

Jon is best reached at the following places:

Facebook: https://www.facebook.com/authorjonmills/
Facebook Author Page: https://www.facebook.com/groups/JonMi...
Website: http://jonmills.com

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5 stars
18 (66%)
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4 (14%)
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Displaying 1 - 3 of 3 reviews
2 reviews
October 11, 2025
The story is decent, but there are so many grammatical errors that it’s almost difficult to read. I would encourage the author to use better proofreaders. Because if the proof reading is done correctly, the story is really really good. But as it stands, I can only give it a mediocre because of the errors in grammar.
50 reviews
June 11, 2019
Really put together well.

Every time I think Travis is going down, somebody else's crap hits the fan. There were words missing in sentences and thoughts that had to be inferred; but on the whole a good read.
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37 reviews
June 27, 2018
Loved all 3 books

This is the 3rd book in the trilligy, you willlove tgem. Find iut if travus funds his brotger will and if he stops the secret government agency
Displaying 1 - 3 of 3 reviews

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