What would you do if your mother was a sadistic killer who tortured and murdered people in your own home? Would you have the courage to escape and expose her crimes? This is the shocking true story of three sisters who survived living with their mother, Shelly Knotek, one of the most notorious female serial killers in American history.

If You Tell by Gregg Olsen is a gripping and chilling true crime book that reveals the dark secrets of the Knotek family. Based on extensive research and interviews, Olsen reconstructs the horrifying events that took place behind the closed doors of their farmhouse in Raymond, Washington. He also explores the unbreakable bond of sisterhood that helped Nikki, Sami, and Tori Knotek endure unimaginable abuse, degradation, and psychic terrors at the hands of their own mother.

Shelly Knotek was a master manipulator who lured vulnerable people into her web of lies and violence. She subjected her daughters, her husband, her cousin, and her friends to unspeakable acts of cruelty and brutality. She controlled every aspect of their lives, isolating them from the outside world and making them fear for their lives. She also killed at least three people, including her own brother and two of her best friends.

But Shelly Knotek underestimated the strength and resilience of her daughters. Despite being brainwashed and traumatized by their mother, Nikki, Sami, and Tori developed a defiant bond that made them less vulnerable than Shelly imagined. They found ways to support each other, to resist their mothers influence, and to plan their escape. They also gathered evidence of their mothers crimes and eventually turned her in to the authorities.

If You Tell is a riveting and disturbing account of a familys nightmare and a testament to the power of love and loyalty. It is also a warning about the dangers of trusting someone who appears to be kind and caring, but who is hiding a monstrous nature. If you are looking for a true crime book that will keep you on the edge of your seat and make you feel a range of emotions, from horror to anger to admiration, then you should read If You Tell by Gregg Olsen.