Pre-Order
Marshmallows Are
Their Favorite
Undercover at a Primate Lab
Available for pre-order now, and on sale October 6, 2026.
One investigator. Four months undercover. Getting in was the easy part.
A fast-paced true story about life undercover at a US National Primate Research Center, the monkeys whose stories have never been told, and the cost of living a lie long enough to tell the truth.
Classroom, library, book club, and organizational orders — get in touch for bulk pricing at info@lindsayoliver.com.
How You Can Help
Three things that make a difference
01
Pre-order the book
This is the most helpful thing you can do before October 6. Early orders signal demand and influence how far the story reaches.
02
Tell someone about it
Share it with friends and family, post about it, or mention it to your book club. Word of mouth is often underrated!
03
Ask your library to order it
Most libraries take requests from patrons, and asking yours to order a copy can put the book in front of far more readers.
Advance Praise
"Unforgiving, empathetic, raw and real. An eye-opener. A broken system that is fundamentally cruel, crude, and irrelevant in these technological times."
Ingrid Newkirk
Founder and Principal, PETA, and author of numerous books, including Animalkind
"Lindsay Oliver's courageous work clearly and shockingly reveals that too often scientists neglect this basic responsibility to nature's sentient and vulnerable beings. This honest story must be told."
John Gluck, Ph.D.
Professor Emeritus, former animal researcher, and author of Voracious Science and Vulnerable Animals: A Primate Scientist's Ethical Journey
"If you care about animals and their treatment in laboratories, you need to read this very important book."
Robert Ingersoll
Primatologist, featured in Project Nim, and author of Primatology, Ethics and Trauma: The Oklahoma Chimpanzee Studies and Trauma in Sentient Beings: Nature, Nurture and Nim
Why Pre-Order
Pre-Order Marshmallows Are Their Favorite by Lindsay Oliver
Early orders influence how many stores stock the book, how much attention it gets during release week, and how far the story travels. Reserving your copy now is the single most helpful thing you can do before October 6.