Kate Gosselin Is 'Nervous' About Estranged Son Collin's Book, Claims Insider: 'Going to Expose a Lot'

Kate Gosselin is reportedly feeling uneasy as her estranged son Collin Gosselin prepares to release a tell-all memoir about his childhood.

The former Jon & Kate Plus 8 star, 51, is said to be concerned about what Collin, 22, will reveal in In the Shadow of Eight: Surviving the Reality of My Childhood, which is set to hit shelves on October 13. The book promises to detail Collin's experiences growing up on reality television and his longstanding allegations against his mother, which Kate has denied.

“There is no doubt Kate is nervous this book is about to hit,” a source . “Kate doesn’t want anyone in the family to talk about their past. She considers any of the children who talk in the family as traitors.”

With the book's release approaching, Collin has made it clear he believes other people have more reason to worry about its contents than he does.

When recently asked whether he was nervous for anyone to read the memoir, Collin replied, "I'm not the one that should be nervous."

"We're putting it all out there, let's just say that," he added.

Collin has described writing In the Shadow of Eight as a therapeutic experience that allowed him to process a childhood spent in the public eye.

"This book is going to expose a lot," he told Page Six, explaining that he also hopes his story will encourage greater protections for children working in entertainment. "This book is going to reveal the truth, and people will finally see the real Kate Gosselin, and it’s not pretty.”

According to the publisher, the memoir will explore experiences Collin says occurred away from the cameras, including his time in an institution and his allegations about being mistreated as a child.

Collin has publicly accused his mother of abuse and exploitation over the years, allegations Kate has denied.

After Collin announced his memoir earlier this year, Kate pushed back against his claims and described her estranged son as mentally ill. Her attorney previously said he did not believe Kate intentionally harmed Collin and maintained that she made decisions she believed would protect herself and her family.

Collin hasn't shied away from addressing his mother while promoting both his book and Season 5 of Special Forces: World's Toughest Test.

Asked what he would say to Kate if she watched him complete on the Fox series, he laughed before offering a brief message: "Hey, Mom! Hope you enjoy."

He stressed, however, that appearing on the same competition series his mother previously attempted wasn't about trying to one-up her.

"This isn't about her, it's about me," he explained.

The mother and son have been estranged for years, and Collin has also spoken openly about his distance from most of his seven siblings.

He remains close with his sister Hannah Gosselin, while he has described being separated from sextuplet siblings, Aaden, Joel, Alexis and Leah and older twin sisters Cara and Madelyn.

Collin has said his memoir is ultimately about more than his family feud, describing the project as a story about "truth, survival, resilience and finding my voice after years of being silenced."