Meghan Markle
Meghan Markle's sister, Samantha, wants to steal the limelight on her due date by releasing her tell-all book "In the Shadows of The Duchess." Pictured: Markle attends the annual Remembrance Sunday memorial on Nov. 11, 2018 in London. Getty Images/Chris Jackson

Meghan Markle's sister, Samantha, has plans to hijack her baby's birth by launching her tell-all book on her due date.

The Duchess of Sussex's sister has made headlines last year due to her controversial book, "The Diary of Princess Pushy's Sister," and she is reportedly launching it in April or May. She initially insisted that the book wasn't a slamming tell-all, but hinted that it would "cover everything from lullabies to lies."

"'In The Shadows Of The Duchess' covers everything… the world does not know truth total truth… (I'm) holding nothing back!" Samantha told Daily Star. "From lullabies to lies..it's all they're in my book."

Samantha added that the book will also touch on netizens and fans attacking her online since Markle married into the royal family. In fact, she was forced to contact the FBI due to "cyber bullying."

"I stretched it out because there was so much more I wanted to get in before it ended," she said. "On top of it I am dealing with cyber stalking and cyber bullying with little Twitter trolls...they're kind of nasty sending out banners and propaganda about me that's disparaging and not true."

"They have been reported to the FBI and they were calling in death threats to radio stations (too), so the FBI and police have their phone numbers and their addresses," she added.

Last year, Samantha confirmed that she is planning on releasing a controversial book about Meghan and their family. However, she denied that she and Meghan are in a feud. In fact, she insisted that she was misquoted by tabloids and was just a victim of "mistruths." She also addressed the contents of the book.

"Well, it is true that I'm writing a book and the title is accurate, what is not true [is] this unbelievable swell that's been created that it's some sort of slamming 'tell-all,'" Samantha explained. "First of all, it's only a tell-all in that I go through and recant some of the beautiful nuances of our lives, our family home."

However, in July she dropped another hint about her book and teased that there will be explosive revelations in there. It includes "in-depth look" and "unspoken dynamics through and beyond the wedding." She also promised that "opening the book and reading it puts a spotlight on the shadow."