This book is addictive to say the least! I could not put it down. I gave it to my wife when I was done and she got hooked too! She and I both want more. Dr. Loomis is so talented. We can't wait for the next book.


When I first got into this book, I was a little nervous that some of the topics would be over my head. However, Dr. Loomis does a wonderful job of explaining different elements where appropriate, and at a level that any reader will be able to understand!

Everything in this novel flowed so well, and the continuous action did a great job of keeping my blood pressure just slightly above normal. Though it would have been nice to have a bit more of a backstory on Hoffman, the characters were still very well developed. Dr. Loomis did a great job of portraying Rocco's journey and continuing character development throughout the novel, and I am so excited to see where the next book takes him!


A popular app called eTelepathy, which is able to capture a person’s brain waves, creates a wireless interface between a person’s brain and their smartphone. But once downloaded, it also allows for ongoing subliminal influences from the app’s creator, Dr. Karl Hoffman, a professor of Neuroscience, even when not in use. Hoffman has been using the app for his own agenda and FBI agents John Rocco and his colleagues need to stop him before he expands his mind control further.

Essence: Assault On the Mind by Mario G. Loomis MD provides insight into the transcendent nature of the mind, string theory physics, near death experiences, and alternate dimensions. The premise of mind control is interesting and Loomis has developed it solidly into the fast paced plot. It reminds me somewhat of The X Files, due to the involvement of FBI agents, particularly John Rocco and Clare Bristol, as well as the oddity of the case that they are trying to solve. Interestingly, if we look at the world we’re living in today and the historical facts, the idea of corruption of free thought is not science fiction. There are also times when the story blurs the line between science and spirituality.

The characters have sufficient depth and the narrative is straightforward and swift. The discussed scientific theories are easy to understand. This is a solid read from Loomis and I enjoyed it. I recommend Essence: Assault On the Mind to readers searching for a sci-fi thriller drawing on both accepted and refuted fringe science.

–Lit Amri, Reviewed for Readers’ Favorite

Based on the cover art alone, I prepared for "Assault on the Mind" to be a Matrix-like mix of science fiction, psychological thriller, and dark action. And while there were elements of all of those things, here is a book that, while highly readable, appeals strongly to the intellect. And eventually, the heart.

This even-paced first novel is a character-driven exploration of the mind, humanity, religion, and ultimately, love. Loomis' writing shines in its clarity (I now understand string theory), in his treatment of main characters, and in particular, his ability to set a scene. Whether in the bare concrete confines of a warehouse, a dim chapel with a friar praying in it, or the lush forests of Nicaragua, he takes you there.

I would have liked a deeper understanding into the villain Hoffman's backstory - more about his motivations and the intricacies of eTelepathy. But what I really would like, and where I could see this going, is a series of books featuring John Rocco.

In Rocco he's created a strong and sympathetic protagonist. There's a backstory that could be mined in future novels. His relationship with Clare wants to go places that I'd be eager to read about! Might this be the first in a series of Rocco novels? This reader certainly hopes so!

Well worth the read.

–Amazon User

A taut suspense thriller following engaging characters through a story of mass mind control. Essence touches on fascinating concepts like mind spirit, body connections while keeping the plot moving. A truly original book, something I am not able to say very often. Hoping Dr. Loomis makes this into a series.


A very engaging read! I was pulled in within the first few pages. Definitely a page turner, well written and a thriller.


This is a fantastic, thrilling book full of excitement, science, and even some medical information. Essence, Assault on the Mind has intriguing, well-developed characters. I love Rocco and the rest of his friends. I would highly recommend this action-packed book!

–Amazon User


Primordium is an easy yet intellectual read that I would highly recommend to readers of all ages. Every chapter left me hungry for more. The author's medical background is woven seamlessly into the story, making it a science-fiction in the truest sense of the phrase—where real concepts are explored and manipulated to create totally believable fantasies. Primordium threw me into a world that's familiar yet filled with fascinating things I've never seen before—from monsters to medical miracles.