Protocol Four: Dawn of Mankind Book 3

by John Walker, David Cooper

Cassian Reeve started all of this. Now he's benched by his own command, watching his ship fly into the dark without him.

A relay station on the frontier goes silent. It wasn't destroyed. It was opened. The crew wasn't killed, it was carried off, and nothing in Fleet's records explains how a thing like that is even possible.

Whatever took them doesn't want territory. It was refused something long ago, older than the Oruun, older than the war itself, and it has spent every year since taking by force what others bleed to earn.

And it will speak to only one man.

Fleet stripped Reeve of his command to protect itself. It may have just opened the only door the enemy was ever looking for.

306 pages, Kindle Edition

Published July 31, 2026

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Reviews

[David J Arens]

institutions are made of individuals and trust of the leadership is when institutions thrive

I’m impressed in the writing of this book emotion struggle conflict the concept of the understanding and knowing of an enemy that you do not allow to be destroyed because the unfamiliar is more frightening. We all are trying to survive.

[Marlene M. Oaks]

Amazing

Each installment seems to get I look forward to the next book to find out how this all comes together or falls apart. It's very exciting and flat provoking reading.more L amazing than the 1 before. I look forward to the next book to find out how this all comes together or falls apart. It's very exciting and flat provoking reading.

[Tomato]

good story

blaaaaaahhhhh good read for scifi but i need a long word of stuff and i cant use voice and i r

[w.j.martin]

Protocol 4

I can not wait for protocol 5 this week reading this has been revelation and the best science fiction I have read in a long time.

[James Doughty]

Gripping and unusual series

Not your usual space opera. Fast paced but deep. Highly enjoyable, well characterised. The proof reading could have been better though.

[Michael Hackerott]

Excellent!

This book really stepped up the story and the characters. It was much more interesting and compelling a read than the previous books. I am looking forward to more.