A New Book by Lindsay Oliver · October 6, 2026
Marshmallows
Are Their Favorite
Undercover at a primate lab
One investigator. Four months undercover. Getting in was the easy part.
A fast-paced true story about a hidden world, the adrenaline of going undercover, and the cost of living a lie long enough to tell the truth.
Available October 6, 2026 — Pre-order your copy today
Not ready to order yet? Get pre-order news & exclusive updates →
About Lindsay Oliver
Author · Investigator · Executive
Lindsay Oliver is an award-winning undercover investigator and writer who has spent more than two decades exposing some of the world's most hidden industries. She has personally conducted or overseen more than a hundred investigations across research laboratories, animal agriculture, zoos, circuses, and other systems that operate largely out of public view.
Her work has generated major media coverage, driven corporate and legislative change, and is featured in the documentary Eating Animals produced by Natalie Portman.
Read full bio"One of the most unsettling things about undercover work is how ordinary everything can seem while something profoundly wrong is happening."
— Lindsay Oliver
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
Media & Press
For Journalists,
Producers & Hosts
Lindsay is available for interviews, podcast appearances, and speaking engagements. The full media kit — including bio, high-resolution photography, book details, and story angles — is coming soon.
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The Story Doesn't End on the Last Page
Take action at Send Marshmallows
Reading the book is the first step. The campaign gives you what to do next.
Visit SendMarshmallows.com →