Dynasty actress Catherine Oxenberg has claimed that the children of four former Mexican presidents are members of the NXIVM cult, which has been accused of branding female members and using them as sex slaves.

Oxenberg has spent the past year trying to bring down the cult in the hopes of freeing her 27-year-old daughter India who has been part of the secret organization for years.

The controversial group, headquartered in New York, is led by Keith Raniere and his right-hand woman, Allison Mack. They are accused of recruiting women to a secret sub-society within NXIVM in which members were branded.

In her new book, Captive: A Mother's Crusade to Save Her Daughter from a Terrifying Cult, Oxenberg detailed how NXIVM gained a huge following in Mexico with its popular motivational courses, known as Executive Success Programs (ESP).

Catherine Oxenberg has spent the past year trying to bring down the NXIVM cult in the hopes of freeing her 27-year-old daughter India who was recruited

She claims that Raniere wanted to infiltrate Mexico for his secret sex cult.

'The group was composed of Mexico City's elite, wealthiest, high-society types,' Oxenberg writes in her book, according to an excerpt obtained by The Daily Beast.

NXIVM's Mexican affiliate was headed by Emiliano Salinas (above), the son of former Mexican president Carlos Salinas. Oxenberg claims Raniere was using Emiliano as a pawn for years in his quest to bring NXIVM to world domination

'The children of four former Presidents of Mexico have been involved with ESP.'

NXIVM's Mexican affiliate was headed by Emiliano Salinas, the son of former Mexican president Carlos Salinas.

Oxenberg claims Raniere was using Emiliano as a pawn for years in his quest to bring NXIVM to world domination. It was happening as Emiliano's family were grooming him for a political career.

'From what I heard from high-ranking defectors, the supposed plan was to get Emi into office in Mexico's next Presidential election in the summer of 2018 so that a top-ranking Espian and NXIVM devotee would have power on the world's political stage,' Oxenberg writes.

'His father, Carlos, would use his Machiavellian methods to ensure his son's election win, and then Keith would use Emi as his puppet and rule Mexico.'

Emiliano revealed in April that he had cut all ties with NXIVM.

Men had been signing up for a male's course in droves, according to Oxenberg.

The Dynasty star says her 27-year-old daughter India was branded with Keith Raniere and Allison Mack's initials. Pictured above is the branding on one of the women

'While the men thought that they were being trained to become honorable, noble protectors of humanity, they were actually being molded to serve as mindless soldiers in Keith's perverse army - the sole goal of which was to protect Vanguard (Raniere) and his harem,' she wrote.

After she started investigating the group to free her daughter, Oxenberg says she received 'threatening letters' from a NXIVM lawyer, as well as a Mexican state attorney general, accusing her of fraud and extortion.

She said the group had such power that one Mexican TV reporter she spoke to begged her not to reveal his name because he feared being killed.

'He wasn't joking... Not only was he referencing the cult's potential power in Mexico, because it was populated with so many of the country's rich, famous, and most elite citizens, but he was also acknowledging the danger that one of those citizens was Emiliano Salinas. His father, Carlos, the most feared man in the country, would do anything for his son,' she wrote.

Raniere fled to Mexico but was arrested this year and taken to the US to face charges that he, along with an adherent, Smallville actress Allison Mack, coerced followers into becoming slaves to senior members.

The controversial group, headquartered in New York, is led by Keith Raniere (left) and his right-hand woman, Allison Mack (right). They are accused of recruiting women to a secret sub-society within NXIVM in which members were branded

'Keith was deported instead of extradited, which would have been the proper protocol,' Oxenberg writes in her book. 'There was a worry that the Salinas family would step in and use their government ties to block extradition if they caught wind of it.'

Raniere and Mack have both pleaded not guilty to sex-trafficking charges.

In an interview on NBC that aired this week, Oxenberg revealed that her daughter India had been branded during her time in the cult but that she had finally returned home to her family after seven years.

Oxenberg initially took India to a meeting for a NXIVM motivational course back in 2011 after her daughter wanted to try her hand at being an entrepreneur.

While she ended up distancing her from the group, India became immersed and eventually moved to the group's headquarters.

She admitted to feeling 'horrendous guilt' at having introduced her daughter to the cult in the first place.

'I brought her in. And that's why I feel responsible for getting her out... At first I felt horrendous guilt that I had participated in bringing my daughter into an organization that was this deviant and dangerous,' she said.

'Then I started to educate myself... I spoke to numerous experts and they said, "Would you stop blaming yourself? These cults are well-oiled machines. India never stood a chance."'