"This was a fascinating, fast-paced, and uniquely genre bending read! I enjoyed it quite a bit!"
Christina Marie Reads

"Eisenberg capably leads us through the many aspects of life the novel covers, from the oil industry and engineering to how the FBI and CIA protect their people, to adoption laws and procedures - and it was all very interesting!"

"The story of Jack and his search, and the mystery/thriller aspect were the most enjoyable parts of the book."
Books I Think You Should Read

"The riveting story kept me fully engaged...Parts of this had me at the edge of my seat, reading quickly to see what was going to happen. I recommend this to anyone who is looking for something different and intriguing.”
If Cats Could Read

"Overall, this is a beautiful story of family, love, grief, and relationships, and readers will become intrigued to find out what will happen next."
The Nerd Daily

"Primal Calling is part family drama and part spy thriller. It’s well paced, full of tension and is an engrossing and compelling read."
The Bookwormery

"As a reader, I really felt like I was being sucked into this town and this story...Primal Calling is a touching story that I think many readers will enjoy."
Riana Shahid

"Jack was a great character and I desperately wanted to see how all this would work out. One lie, whether large or small, can change everything."
— Renee’s Ramblings

"A one-of-a-kind novel, Primal Calling is recommended for fans of mysteries that are wrapped up in family drama with a touch of international spy intrigue."
SA Examiner

"I liked how this story didn’t follow the expected route and took on a more thrilling conclusion. All in all, this is a story that will keep your interest from the first to the last page."
Books from Dusk Till Dawn

"The author did a nice portrayal of the power of persistence...I enjoyed the book and recommend it."
Pick of the Literate

"This thriller is something that will keep you guessing as you follow Jack through his journey. Eisenberg has written a solid debut novel that showcases a character struggling to understand who he is and find out more about someone he never knew existed. With so much uncertainty for Jack the story will seem to go back remarkably quickly as you race to find out more as you read. If you are looking for a read full of intrigue to start your year this is a book you will want to check out.”
The Nerdy Girl Express​​​​​​​

"What a cool book. This book had a little bit of everything, a little bit of coming-of-age for Jack, a little lost love kind of thing, a little thriller, a little secret national security operations, it was just a whole lot of stuff, easily packed into one book. I easily finished this one in a day because each chapter is fairly short but written in a way that you keep telling yourself you're going to just read one more."
Stranded in Chaos

"Overall this was a good book for a debut novel with multiple layers, varied plot lines, and complex characters."
—​​​​​​​Storeybook Reviews​​​​​​​

"This is a stellar first book. A richly written multi-layered story filled of intrigue and a nicely done portrayal of the power of persistence.”
Toni Osborne

"This is author Barry Eisenberg’s debut novel and it’s really good. A solid thriller, with well-written characters, that starts fast and never lets up. I really enjoyed it."
Red Carpet Crash

"Barry Eisenberg writes an effortless story that connects to a reader in a meaningful way...a story that has been crafted brilliantly and is debut worth watching out for."

"Primal Calling is well written and quite intense. At times I did not want to put it down. At other times I had to put it down just to absorb what had just happened in the story."
English Plus

"Eisenberg is an author to watch for more from in the future.”
Subakka Bookstuff

“Fast-paced…4 stars"
The Phantom Paragrapher