“Bioweapons are the greatest threat humanity
has ever faced.” —Stefan Köbi

★★★★★ Riveting and Terrifying – “Excellent. Viral Deceit is a very well-written quick read. Anyone concerned with possible reasons behind pandemics needs to read this book.” – 5 Stars, S.Z., Goodreads Reviewer

★★★★ This Book Feels Like a Warning – “This book feels like a warning rather than entertainment, it shows how easily global disasters can be hidden behind complexity and time.” – 4 Stars, M.C., Goodreads Reviewer

★★★★★ Heartwarming and Real – “This book stayed with me long after I finished it. The idea of planning a pandemic decades in advance, starting from the 1950s, is terrifying. The way the Genetic Bioweapon Lab evolves into something even more dangerous feels disturbingly believable.” – 5 Stars, H.C., Amazon Reviewer

★★★★★ Fast-paced, Suspenseful Read – “The story quickly pulls you into a tense, high-stakes laboratory setting where hidden agendas and difficult decisions drive the plot forward. New readers should expect a fast-paced, suspenseful read that keeps the pressure high and the curiosity strong from start to finish. It’s the kind of story that makes you keep turning pages just to see what happens next.” – 5 Stars, J.H., Goodreads Reviewer

★★★★★ A Very Human Layer to an Otherwise Chilling Story – “Ellie’s character really stood out to me. She isn’t portrayed as evil, just conflicted. Watching her balance scientific ambition, secrecy, and her relationship with Remy added a very human layer to an otherwise chilling story.” – 5 Stars, M.M., Amazon Reviewer

★★★★★ Dark, Clever, and Thought-Provoking – “Remy’s role as a journalist felt realistic. He wasn’t a hero who magically uncovered everything, he slowly connected dots, missed things, and got too close without fully understanding the danger until it was too late.” – 5 Stars, I.D., Amazon Reviewer

★★★★★ I couldn’t put Viral Deceit down! – “Stefan Köbi knows how to build suspense like a pro, just when you think you’ve figured out what’s happening, he twists the story in a way that completely surprises you. The mix of mystery, intrigue, and real-world consequences kept me on edge the entire time. This isn’t just a thriller, it’s smart, gripping, and makes you think about how easily deception can spread. Definitely one of the most compelling reads I’ve had in a while!” – 5 Stars, E.M., Goodreads Reviewer

★★★★★ Gripping and Unsettling Read in a Good Way – “I found Viral Deceit to be a gripping and unsettling read in a good way. It pulls you into a lab environment where nothing feels fully transparent, and every decision carries weight. Ellie’s journey keeps you alert because you’re constantly trying to understand what’s really going on beneath the surface. The tension builds quietly but steadily, which made it hard for me to stop reading once I got into it. What I liked most is how believable it feels. It doesn’t rely on exaggerated drama, it builds suspense through uncertainty and human decisions under pressure. A short but engaging thriller that leaves you thinking about how fragile control can be when hidden agendas are involved, well done on this author Stefan.” – 5 Stars, O.P., Goodreads Reviewer

★★★★ The Relationship Between Remy, Ellie, and Abbey Gave This Story a Heart – “Most conspiracy thrillers spend so much time on the mystery that they forget to make us care about the people involved. What surprised me most wasn't the conspiracy surrounding DECEIT, it wasn't the vaccine discoveries, it wasn't even the shocking ending, it was the family. The relationship between Remy, Ellie, and Abbey gave this story a heart that many thrillers simply don't have. Every time the plot became darker, the author brought us back to these characters and reminded us what was at stake. Abbey especially felt real. The scenes between father and daughter were some of the most touching moments in the entire book. Because of that, the conspiracy never felt abstract, it felt personal. When the truth started emerging, I wasn't thinking about governments or secret programs anymore, I was thinking about what these discoveries would do to the people I had grown attached to. That's what elevated this book from a good thriller to a memorable one.” – 4 Stars, M.S., Goodreads Reviewer

★★★★ I Loved All of It – “This book is going to divide readers. Some people will see it as a conspiracy thriller, others will see it as a warning. Some will read it for the science, others will read it for the characters. Personally, I loved all of it. The author manages to create a story that works on multiple levels at once. You can enjoy it simply as suspense, or you can spend hours thinking about the ethical questions it raises. The most interesting thing for me wasn't whether the conspiracy existed, it was watching good people justify terrible decisions because they believed they were helping humanity. That's what made the story feel believable. And honestly, that's what made it frightening.” – 4 Stars, H.T., Goodreads Reviewer

★★★★★ Worthwhile Read – “I appreciated how the author didn’t rush the science. The explanations around virology, mutation, and vaccine development were detailed but still readable. It made the plot feel grounded instead of sensational.” – 5 Stars, J.S., Amazon Reviewer

★★★★ A Gripping Thriller with Emotional Depth – “The best compliment I can give this book is that it felt real. The characters react like actual people rather than action heroes. Their decisions have consequences, their fears feel genuine, and their relationships matter. The family scenes between Remy, Ellie, and Abbey gave me some of my favorite moments in the book because they reminded me what was truly at stake. A gripping thriller with emotional depth.” – 4 Stars, S., Goodreads Reviewer

★★★★★ A Must-Have for Curious Minds! – “The dual-vaccine concept was one of the most disturbing parts of the book. Realizing that one population was fully protected while the rest of the world wasn’t changed how I saw the entire pandemic storyline.” – 5 Stars, K.B., Amazon Reviewer