NEED TO KNOW

Amy Duggar King tells PEOPLE about the secret her family kept from her throughout her childhood

"I honestly did not know why until my mom and I spoke after he passed away," the former reality star says

Holy Disruptor: Shattering the Shiny Facade While Getting Louder with the Truth is out on Tuesday, Oct. 14 and available for preorder now, wherever books are sold

A dark family secret was kept from Amy Duggar King for many years.

While speaking to PEOPLE about her debut memoir Holy Disruptor , out Oct. 14, the 19 Kids and Counting alum opens up about an unexpected family revelation that she learned after the death of her grandfather, Jimmy Lee Duggar.

Amy, now 39, was not allowed to be alone with her grandfather at any point when she was growing up in Arkansas. "I

See Full Page