"An ingenious medical thriller, suspenseful and cleverly plotted."
--Kathy Reichs, author of Break No Bones
"Palmer is adept at tapping into people's natural fear of disease, doctors, and hospitals and converting that fear into unnerving suspense…If medical thrills are what you're after, he delivers."--Booklist
"In his entertaining 12th medical suspense novel…Palmer, himself an M.D., does a good job of informing the reader on an important ethical issue."--Publishers Weekly
"Palmer is adept at reaching into the psyche...and knows how to wield a scalpel…chilling."
"Gripping and topical."--The Toronto Sun
"Palmer's latest has thrills and chills aplenty, while conveying a sobering--make that terrifying--message. Not only is this one heck of a medical thriller, it's a scary wake-up call to what could happen if a few individuals decided to play God, a premise that scared the daylights out of me. Could this happen? Palmer makes you think so."--Sandra Brown, author of Ricochet
"The Fifth Vial is a nail-biting thriller you don't want to miss."--Catherine Coulter, author of Point Blank
"Michael Palmer delivers a complex plot, fascinating characters, and plenty of action. The Fifth Vial is a roller-coaster ride that winds its way through the United States, Africa, India, and Brazil on the way to a terrific surprise ending."--Phillip Margolin, author of Proof Positive
"Brilliant storyteller Michael Palmer is at the top of his game, and gives us a compelling and thought-provoking tale that will have you looking over your shoulder. It's both realistic and terrifying, and it will keep you up all night!"--Iris Johansen, author of On the Run
"There's a compelling truth at the center of this high-octane thriller. The twists keep you reading and the questions Palmer poses keep you thinking all night long."--Tami Hoag, author of Prior Bad Acts
"Michael Palmer, perhaps the best of our medical-thriller writers, has penned an action-packed tale that will have you checking all your body parts for days afterward."--Terry Brooks, author of Armageddon's Children and The Sword of Shannara