If You Tell: A True Story of Murder, Family Secrets, and the Unbreakable Bond of Sisterhood

Harrowing and heartrending, If You Tell is a survivor’s story of absolute evil—and the freedom and justice that Nikki, Sami, and Tori risked their lives to fight for. Sisters forever, victims no more, they found a light in the darkness that made them the resilient women they are today—loving, loved, and moving on.

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Published Dec 1, 2019

429 pages

Average rating: 7.26

1,029 RATINGS

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Community Reviews

What Bookclubbers are saying about this book

✨ Summarized by Bookclubs AI

Readers say *If You Tell* is a chilling, thoroughly researched true-crime story that reads like a psychological thriller, vividly recounting the harro...

Across the Globe Book Buddies
Oct 19, 2025
8/10 stars
Yowza! People are deranged. A fascinating read that still has me shaking my head in disbelief.
McCalLinz
Jan 09, 2025
8/10 stars
Well written, but difficult to read because of the horrific and devastating truth of the subject and its reality. I almost stopped reading a few times because of how horrific the subject matter was, but kept telling myself if the victims lived through this situation the least I can do is read their story as they didn’t have the choice to put the book down when it became too much for them.
KikiStoneCreek
Jun 03, 2023
6/10 stars
A rough read, due to the incredible torture described. But I was disappointed that the book wasn't as well written as Mr. Olsen's fiction novels. It almost seemed as though someone else had written the book. If you want the truth about how abusive parents can be, I'll recommend this book. If you want a taut, superbly written mystery, I'll happily recommend any of his other books!
Mary Pat Holt
Feb 05, 2026
8/10 stars
I read another book, Lying Next to Me, by this author and liked it but this is the first NF book I've read by him. (He writes a mix of both.) It is hard to write a review of this book because the content is so dark and disturbing. Olsen clearly did his research, he interviewed many people to tell this story including the Knotek sisters and their dad, Dave. Although Shelly agreed to an interview, she never did. This is not an easy story to read. Shelly is an evil person
Kelly Violette
Jan 22, 2026
10/10 stars
If You Tell is a chilling true-crime story that reads like a psychological thriller. Gregg Olsen masterfully recounts the harrowing experiences of three sisters who survived unimaginable abuse, weaving their voices into a narrative that is both heartbreaking and inspiring.

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