6 of the most explosive claims from the new book about the royals.

The highly-anticipated and controversial book Endgame: Inside the Royal Family and the Monarchy’s Fight for Survival, written by British journalist and writer Omid Scobie, was released this week — and explosive claims regarding the royal family have emerged. 

The co-author of Finding Freedom, Scobie writes about Meghan Markle and Prince Harry's escape from "the firm", pulling back the curtain on a royal family "in crisis".

Watch: Oprah With Meghan And Harry "Almost Unsurvivable". Post continues below.

However, supporters of the monarchy claim the book is one-sided and biased, with sources saying Megan and Harry gave Scobie information to paint their side of the story.

In pre-publication interviews, Scobie, 42, told the Times: "I have mutual friends with [Meghan], and that definitely helps with getting information and breaking details."

Here are some of the biggest bombshells.

King Charles was seen as unfit to rule.

According to the book, Queen Elizabeth "lacked faith" in King Charles' ability to rule, seeing him as an unfit successor for the crown.

"There was a slight lack of faith in her son," Scobie shared in his new book, claiming the Queen had "repeatedly complained about Charles’s extravagantly luxurious lifestyle."

The book goes on to allege that the Queen "needed someone who could be trusted to be her eyes and ears," and she didn’t believe that to be Charles.

Scobie also claims those involved in the monarchy are simply "riding out the Charles and Camilla years" and hoping the next generation(s) of royals "have what it takes to make the royals great again".  

The author also said he foresees a "potentially uneventful era" in which King Charles "will never reach the national treasure status that his mother achieved."

Letters confirm the "royal racist".

The book alleges the exchange of letters between Meghan and King Charles contains "damning details" about the 'royal racist'.

It is said Charles expressed his sadness over the 'distance' between them and his disappointment that the couple made the decision to platform their story and make their views public.

The book also claims the letters detailed how 'upset' Charles was over the claims that 'concern' had been raised about what Archie's skin colour might be 'and what that would look like'.

Scobie claims the private letters reveal the identity of two people who raised "concerns" about the colour of Prince Archie’s skin, however, "laws in the United Kingdom prevent me from reporting who they were."

William is a 'hot head'.

Prince William is described as "hot-headed" and a "company man". The book also details that William did not consider Charles "competent enough" to adequately deal with the mounting scandals surrounding Prince Andrew.

The book goes on to reveal William was "baffled" by Charles' lack of intervention, but he ultimately "didn’t have much confidence in his father to do the right thing anyway." 

It's also reported that Buckingham Palace and Kensington Palace are "hives of competing agendas and different ideas about how to modernise."

Queen Camilla thanked Piers Morgan.

Not only does Scobie make reference to Charles and Camilla’s infamous "tampon-gate" controversy in 1993 (in which a recorded call revealed the former Prince expressed his wish to be a tampon to be closer to Camilla), but he also details Camilla's defence of Piers Morgan.

The TV presenter repeatedly referred to Meghan as "Princess Pinocchio", and according to Scobie, Queen Camilla sent a message to Morgan to thank him for "defending the Firm."  

William believes Harry has been "brainwashed".

In the book, a source told Scobie William believes his brother has been "brainwashed by an 'army of therapists'".

It's also alleged William ignored texts from Harry on the day of the Queen's death, which left Prince Harry scrambling to charter a plane to Balmoral.

Scobie also quotes Harry telling a friend: "I’m ready to move on past it. Whether we get an apology or accountability, who knows: who really cares at this point?"

Kate Middleton is "cold".

Scobie described the future queen, Kate Middleton, as "jokingly shivering" upon hearing Megan's name, and accuses her of being "cold if she doesn’t like someone" and ignoring Meghan’s "cries for help". 

He goes on to claim Kate is an "inscrutable queen in training — an institutional dream come true."

Endgame: Inside the Royal Family and the Monarchy’s Fight for Survival by Omid Scobie, is available in stores and online now.

Feature image: Getty.