Security Protocol: Sci-Fi Adventure Thriller

by Adrian Murphy

270 pages, Kindle Edition

Published July 8, 2026

About the author

Adrian writes fast-paced fantasy adventure and sci-fi novels. His characters are diverse and relatable, battling impossible odds and dark deeds in a desperate battle for survival.

He traces his love of storytelling to growing up in Ireland, where castles and history abound. Today, he makes his home close to the beautiful shores of Lake Huron, Ontario, Canada, along with his adorable cat, Mr. G.

Favorite authors include Martha Wells, Lindsay Buroker, Adrian Tchaikovsky, J. R. R. Tolkien, and Terry Pratchett.

Learn more at: adrianmurphybooks.com

Reviews

[Heather Normand · Rating 5 out of 5]

Loved it.

[Jan · Rating 5 out of 5]

a great tale

If you like space pirates and dare I say knife weilding cyborgs you’re gonna love this story. Another awesome fast paced joyride from this author. You will not be disappointed.

[Richard Davis · Rating 5 out of 5]

Just a quick review for one of my favorite authors, Adrian Murphy. This time it's a sci-fi thriller series coming from the pen of Mr. Murphy, and it promises to be a wild ride.

The Planet Queen is an interstellar cruise ship shuttling passengers from all walks of life across the multiverse, but it's no love boat. A ruthless assassin is seeking to kill Princess Dophena, who's traveling incognito on a covert mission. Alex Chadwick is the green recruit assigned to guard her. But can this space-sick newbie with little experience succeed in his duty while struggling to impress a distant overbearing father?

That's the central dramatic question that drives this novel. As usual with Mr. Murphy's work, there's plenty of action, intrigue and snappy dialogue in the writing, as well as tons of classic sci-fi tropes, from artifical intelligence to androids to space pirates and more. This was a fun read and I'm looking forward to the sequel.

[Brian Hefner · Rating 4 out of 5]

I enjoyed this book. Personal preferences, I didn't care for some of the sexual innuendo (but it is very clean) and not a huge fan of the characters questioning potential outcomes or reasonings so much in order to drive the plot. But the story moved at a face pace and two primary story arcs that are clearly tied together are told quite well and I like the protagonists and several secondary characters. Can't wait for the next book to find out what happens!

[Mike Brannick · Rating 5 out of 5]

This is a great story. It's a fantastic series starter. The characters are realistic and interesting. There's plenty of action, which I love. The storyline is fast moving and thrilling. This is the second series I've read stories from, both set in the same "multiverse." If you like SF you will like this story.

[Debra Schwitzer · Rating 5 out of 5]

This will hold your interest. A good read with unexpected turns is always want I want to read and this book does not disappoint. The only downside was that it ended but more good news, i am sure there will be more!

[Divya · Rating 4 out of 5]

An interesting sci-fi adventure thriller.