Marston Hefner brands Crystal Hefner a 'master manipulator' in damning attack on his father's widow - and suggests she oversaw changes to the Playboy mogul's will when he was 'doped up'

Hugh Hefner's son Marston launched a scathing attack on Crystal Hefner, accusing her of being a 'master manipulator' – and even appeared to suggest she took advantage of the Playboy mogul before he died.

Marston, 34, made a series of damning claims about his father's widow on the Girls Next Level podcast, suggesting the 38-year-old was hellbent on power and oversaw changes to his father's will when he was mentally fragile.

Speaking to hosts Holly Madison and Bridget Marquardt on Monday, he said: 'When Crystal came in [to the mansion], there started to be tribes. And so there were people who were on Crystal's team.'

He said she became addicted to the 'idea of control and power,' and would determine who could and could not enter.

Marston Hefner made a series of damning claims about his father's widow Crystal on the Girls Next Level podcast, suggesting she was hellbent on power (pictured with Hugh Hefner)

Marston (left), 34, accused Crystal of being a 'master manipulator' – and  appeared to suggest she took advantage of the Playboy mogul before he died (pictured with his brother Cooper)

'She liked controlling the guest list,' he said. 'She liked taking girls off and on the guest list depending on how, whatever the whims were at the time… She liked being in that position where you had to go through her or you had to ask her for things.'

Marston, who welcomed a child with his wife last year, also accused Crystal of destroying the fun he used to have with his father during games night at the mansion when they would play Uno, claiming she brought a 'dark energy' that dissuaded him from ever returning. 

Her alleged obsession with control appeared to extend to matters of Hugh's will, with Marston suggesting Crystal oversaw changes when his father was 'sick' and 'dosed with f***ing medication,' which he claims left the businessman unaware of his surroundings.

'He was really sick and that's why she got all these NDA things,' he said. 'According to her, she didn't want people to see him not able to walk, not able to talk.'

Marston, whose mother is model Kimberley Conrad, said his father would struggle to remember how to play backgammon with him, owing to strong medication for his back pain.

'The year that he passed away, he changed the will and he gave me, another person, and Crystal more money,' he said. 'And I don't know how much more, I don't remember if Crystal got more than us....

'I was looking at that when I was getting the inheritance, and I was like, "Why? When he wasn't here, when he didn't know what the f*** was up or down half of the time, why would he change his will?"'

He continued: 'And that's why I sent an email saying, "I don't think he's competent anymore, guys, can we agree on this?" And nobody really wanted to address what I perceived as the elephant in the room.

Marston questioned some of Crystal's claims in her memoir Only Say Good Things: Surviving Playboy And Finding Myself - as well as her motivation for writing it

Marston and his brother, Cooper, pictured with their father Hugh and mother Kimberley Conrad in 1998 

Masrston (pictured with his wife) accused Crystal of bringing a 'dark energy' to his father's famous games nights, and as a result he never returned 

Crystal, pictured right, was the final wife of the Playboy founder - pictured together with Kristina and Karissa Shannon at Hugh's 83rd birthday pool party in 2009

‘And then more than that, it's like why is it when somebody can't play his favorite thing and doesn't know where he is, why is he changing his f***ing will? Why are people allowing that to happen?’

Crystal famously wed the magazine publisher in 2012 when she was 26 and he was 86. They were married until his death, aged 91, in 2017 as a result of heart failure and septicemia after contracting a deadly strain of e-coli. He left a reported $43 million fortune.

Earlier this year she published her explosive memoir, Only Say Good Things: Surviving Playboy And Finding Myself, in which she made a number of bombshell claims, including that she never loved the late magazine kingpin and she felt imprisoned in their four-year marriage.

Marston revealed how he messaged Holly and Bridget, referring to Crystal as a 'master manipulator' after reading her book, and questioned some of her claims - as well as her motivation for writing the memoir.

Suggesting she buys Instagram followers, he asked: 'If you're not interested in fame, why are you buying Instagram followers? 

Crystal (pictured with Hugh on his 84th birthday in 2010) made a series of explosive claims about the notorious libertine in her memoir 

'If you're not after money, then why was she hustling as Crystal DJ Hefner? And she said that she was building a real estate empire, but she was building one as a Hefner. So she did need to be there in order to build it, in my opinion.'

Marston, who runs an OnlyFans account to fund his love for collecting Pokémon cards and rare comic books, then accused Crystal of allowing Hugh to buy a property for her against the advice of his accountants. 

'I heard that it was far beyond his budget,' Marston continued. 'It was not wise. And I heard that his financial advisors were like, "Don't purchase this, dude. You can't afford this...." 

'And he said, "I love this person and I'm going to..." This is my own subjective feelings is like, why would you ask your husband who is in debt to purchase you a mansion that he can't really afford if you don't need the money?'

DailyMail.com has contacted representatives for Crystal for comment. 

Crystal was Hugh's third wife. He married her in 2012, two years after his divorce from Kimberley was finalized.

They were married for 21 years from 1989 and also share son Cooper, 32.

His first wife was Millie Williams with whom he had children Christie and David.