Kathleen Mangan (27), the estranged wife of the accused former NYPD officer Gilberto Valle, tried to warn her husband’s possible victims of his plans to sell them into “white slavery," the court heard.

Valle is accused of planning to kidnap, rape, kill and cannibalize his female victims. He is also accused of using his status to illegally access a law enforcement database to get information on his intended victims. If convicted he will serve a maximum sentence of life in prison.

Kimberly Sauer, a possible victim of Valle’s, testified in court on Tuesday. Sauer, who knew the accused from their student days at the University of Maryland, told the court that she had received a message from Mangan warning her about Valle’s designs.

She admitted that when the Facebook message arrived she had assumed Mangan’s account had been hacked. When she showed a screenshot of the message to Valle and asked if there was any truth to the message he blandly said, “Not that I’m aware of," according to the New York Times.

Prosecutors told how Valle, along with his wife and baby, travelled to Maryland to visit Sauer as surveillance on his intended victim.

The cop’s defense team said this brunch was merely a friendly visit.

On Monday Mangan testified against her husband and explained how she knew something was wrong when she found the strange fetish websites her husband was visiting. She then installed spyware on her husband’s computer.

When she found detailed plans of abduction and cooking she informed the FBI and fled to her parent’s home in Reno, Nevada, with their baby.

Read more: Cannibal NYPD cop wife reveals horror at his plans to tie her up and rape her

She told the court, “I was going to be tied up by my feet and my throat slit, and they would have fun watching the blood gush out of me.”

Valle’s attorney argues that the evidence and online chats presented were just fantasies that turned his client on.

Speaking at the federal trial of Gilberto Valle, defense lawyer Julia Gatto told the court what turns his client on is “the idea of a woman -- oiled, bound, laid out on a platter with an apple in her mouth, about to be cooked.”

She described Valle’s online plans and chats as “his dirty little secret," NBC reports.

Gatto claims that the cop is part of a little-known Internet subculture where people with unconventional desires gather to act them out in cyberspace.

She told the court, "There are literally thousands and thousands of people doing the same thing, online, every day."

The prosecuting lawyer, Assistant US Attorney Randall Jackson, said Valle searched online for homemade recipes for chloroform to subdue victims and recipes for cooking humans.

He said, "Make no mistake.

“Officer Valle was deadly serious."

Valle’s wife, crying in court, quoted emails she found from her husband where he discussed “driving a spit through their wombs over and over again."

"He kept saying the suffering was for his own enjoyment.''

The accused Gilbert ValleNBC