Sex-cult books in the works

THE publishing industry is about to enjoy something of a Nxivm boom, it seems.

Page Six has learned that — with evil leader Keith Raniere now convicted — two blockbuster books about the upstate sex cult are in the works: one by a woman who had a baby with Raniere, and one by India Oxenberg, the Hollywood scion who was allegedly recruited by “Smallville” star Allison Mack.

The first book is by Raniere’s onetime girlfriend — who has never been publicly named, in order to protect her from the vengeful sect — who, we’re told, was one of the “primary witnesses” in the criminal case against Raniere.

Sources close to the book tell us that the author has a school-age son with Raniere, and that she had a “front-row seat” while he was building the cult, gaining a unique understanding “of the process by which he was able to do it.”

We’re told the woman eventually escaped the terrifying Albany-based organization and fled to Florida, where she changed her identity and that of her son in an attempt to evade Nxivm spies. But we’re told Raniere allegedly sank about a million dollars into hunting her down, and eventually found her working as a waitress in a cafe.

The book is repped by Mark Creative Management’s Eileen Cope, we’re told, and they hope to sell it for close to $1 million.

Meanwhile, sources told Page Six that Oxenberg — the daughter of “Dynasty” actress Catherine Oxenberg — is penning a tome about her time in the notorious sex cult.

We hear that project is being shopped by Yfat Reiss Gendell at Foundry Literary + Media — the agency that’s repped best sellers by Trevor Noah and “Jersey Shore” star Vinny Guadagnino.

Catherine has already written a book about India’s involvement in Nxivm, last year’s “Captive: A Mother’s Crusade To Save Her Daughter From a Terrifying Cult.”

Gendell didn’t get back to us.