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Cliff Hall, author
Non-stop action against a backdrop of dark matter, the multiverse, quantum-entangled consciousness, alien invasion, and government conspiracy. As an alien invasion thins Earth's population by a fifth and drains the oceans to devastating levels, young Carter Nesbitt, his father, and his math teacher are taken from a small town in the American southeast. But unlike the rest of the abducted, they are returned, bearing an alien artifact, knowledge of an even graver danger to Earth, and strange new abilities. When Homeland Security's new Director of Extraterrestrial Affairs catches wind of their trip, he will stop at nothing to capture them.

What a great read! Humorous, thrilling and great depth of thought.

The author touches on a wealth of topics like quantum entanglement, diet, ecology, political accountability and many others in a completely coherent and well-formed worldview that will not only entertain you but also make you think about how you want to be governed, what you want to eat, how change is introduced into society and a wealth of other topics.

On top of that the characters are well thought out and represent very clear aspects of humanity that work as ideological, but non-judgmental, guides throughout the story - you even get the alien's side of the story which helps put the whole tale in a perspective that is thought provoking and far-reaching.

David Blake

This was great - a real find! It was a kinda like a sensible version of Hitchhikers Guide to the Galaxy, sort of! Anyway, it was superbly written and kept me happily turning the pages to the very end. Most definitely recommended. More please!

Elizabeth M. Woodcox

I love this book, it is genius! I'm so glad I bought both the soft cover and kindle versions of the book. I love the art work on the cover and I have the book on display.

Herbert K Miller

I thoroughly enjoyed this story. Cliff Hall in his freshman effort has written a exciting fast paced sci-fi novel. His characters are well-developed and have lives that extend well beyond the pages of this book. The story especially the early parts are written with an enthusiastic zeal that calls to mind some of the best disaster stories of Doctor Who in their pacing and excitement. He has managed to take the time trodden trope of flying saucers piloted by a bug-eyed aliens coming to plunder Earth of its resources and make it new again. But more than that this is the story of one families survival in the face of the adversities they encounter. I am looking forward to the next book in this series.

Itsy Bitsy Book Bits

When a father, son and a school teacher are abducted and returned by aliens, this book is just beginning. The story was both complicated and enthralling. The Sci-Fi geek in me loved this novel!

This novel is full of neat characters with all types of personalities, you have an average dad Taylor a sports writer, who does something brave to start us off. He develops special abilities as a result of the abduction.

A boy Carter who is smart as a whip and daring, son to Taylor. He is first to notice that something bad is happening the day of the mass abductions, he also develops special abilities as a result of the abduction.

A school teacher Miranda who is very sensitive and smart. She was at the church, protesting the day of the abductions. She also develops special abilities as a result of her abduction.
Shelia a paralegal and artist who is amazingly brave and courageous, all while suffering from major grief. She attempts to warn the Nesbit family that the government knows about them being returned from their abduction.

Sinclair is a farmer and dad to Taylor, he is a feisty, Christian old coot with the mind of a steel trap.

Jeffrey Harrison a mediocre government analyst turned government flunky and goon. He is asked to facilitate the retrieval of the returnees alive, for government testing and questioning.

Mage a former military Hero turned soldier of fortune and his crew, some really mean men. Men hired to retrieve the returnees.

Tat a scientists obligated into servitude as a soldier of fortune after being rescued from Kosovo. Hired to assist in retrieval of returnees and to medically evaluate them upon retrieval. Thop Sapient Liason for the Thraasian Fleet. The only alien seen by abductees.

Psychically connected to all of the abductees and a seer. These are the main characters in a book about aliens, time and dimensional travel, government conspiracy, invasion and abduction.

"Never doubt that a small group of thoughtful, committed citizens can change the world. Indeed it's the only thing that ever has."


Original story ideas, well written. Eager to read more from this author.

S L Vilkman

First off let me say this is refreshing to find an author not attempting to string people on for 6+ books without having anything being done. This book is a standalone that gives both entertainment and satisfaction in how the story for the primary characters seems to end. There is room for a continuation or other stories set in this version of Earth but they are not required to completely enjoy this novel.

The character development on the primary characters continued throughout the entire book and by the end it was very easy to see them as normal people caught up in a something they could never have anticipated. I also like the number of strong female characters, they were not just the damsel in distress or love interest for the hero type females I find in so many books.

I look forward to future books from Cliff Hall.

Scott Ellenwood

I first read this story as The Sagittarius Protocol, the working name when originally posted on Write On, and I was hooked.

So, cards on the table, I've become a fan of Mr. Hall. I just finished this book and can't WAIT for #2 & #3. Yes, there's a lot going on, some sections could be longer and others shorter, but you have to look at it as Book #1 of a SERIES. Yes, it's great as a stand-alone read, but Mr. Hall has set-up the universe, laid the groundwork and allowed us to visit. So now, fully primed to continue the story, I must unfortunately wait along with all his other fans for the next book.

I want to know more about the aliens, the seer in particular and the secrets they are hiding. I can't wait to see how Carter & the rest get on after the events of Tangential, but I'm particularly interested in the Seer & Traveller abilities. Can they find a way to travel to, and rescue, any of the people taken? Are new hazards on their way through the depths of space? Will Thop ever eat anything besides a ration bar?

I can't wait to find out.



I've been reading virtually constantly since a very young age, and I read between 3-5 books a week. Tangential by Cliff Hall is one of the very best novels I've read. This is a thought provoking book that still manages to be thrilling, funny, inventive and surprisingly well grounded scientifically. It isn't a hard science fiction novel like you might find from Dr. Robert Forward, however Mr. Hall makes an obvious effort to integrate real science and well thought out speculation into this excellent work. Strong female characters, an acceptance of non-mainstream culture, whimsy and a gripping plot line that features alien invasion, inter-dimensional/temporal travel, government conspiracy, and a range of human stupidity, nobility, and wisdom, all combine with well written prose to create the first novel in a series that I will be sure to seek out in the future. Its worth noting that while the book is the first in a series it is fully stand alone and does come to a satisfying ending. 10 out of 10, would read it again.