Pre-Order
Marshmallows Are
Their Favorite
Undercover at a Primate Lab
Available for pre-order now
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.
United States
Australia
Brazil
Canada
France
Germany
India
Italy
Japan
Mexico
Netherlands
Spain
United Kingdom
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
Add it on Goodreads
Mark it Want to Read on Goodreads. It puts the book in front of other readers and helps it surface in recommendations.
What People Are Saying
"A compelling memoir."
BookLife Reviews
"A thriller, an exposé, even a love story. But even more than that, it is an intensely personal and revealing journey of one woman willing to risk her own safety as she navigates two identities in an attempt to shine a light on the truth."
Ari Solomon & Mikko Alanne
Award-winning producers of The Animal People
"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
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.