An NYPD shrink — whose job is to screen new recruits — put a bullet in her husband’s head as he slept so she could start a new life with her married lover, the wounded spouse claims in a lawsuit.

Real estate developer Kenneth Dearden Jr. accused his wife, Emily, of shooting him execution-style with an antique derringer because she “had been having an on-and-off extramarital affair since at least early 2011.”

Her lover, a Texas man named Warren Roudebush, ended his own marriage shortly before the November 2013 shooting and was pressuring Emily to do the same “so that they could be together,” according to the court papers filed last week in White Plains.

“With [Kenneth] no longer in the picture, [Emily] could avoid a contentious divorce, keep the marital home and never admit the marriage infidelity to any family and friends,” the suit says.

No one has been charged in the shooting inside the sprawling, Spanish colonial-style home that Kenneth and Emily share with their two young daughters in a posh section of Yonkers.

Yonkers police Lt. Patrick McCormack called it a “complex case” and declined to comment on Kenneth’s allegations.

The bullet that struck Kenneth entered at the back of his neck, near the base of his skull, passed underneath his ear canal and lodged in his left cheek.

He survived the shooting following surgeries to remove the bullet and to repair a severed artery to his brain.

According to Kenneth’s suit, Emily claimed to have been knocked out by an intruder.

But cops who responded to Kenneth’s 911 call “seemed skeptical” because there were no signs of forced entry, the home’s burglar alarm wasn’t tripped and the family’s pet Rottweiler didn’t react, the suit says.

The court papers claim that Emily refused medical treatment, washed her bedclothes while Kenneth was at the hospital and “shockingly asked the police if they had a warrant” when cops returned to search the house.

She didn’t notify her in-laws about the shooting, instead calling Roudebush and meeting him for coffee the next day, says the suit, which was posted online by The Journal News on Thursday.

A civilian NYPD co-worker told The Post that in the aftermath of the shooting, Emily was allowed to “sit in her office eight hours a day . . . to watch movies, organize her iTunes and wrap Christmas presents on city time.”

But Emily — who was hired in 2002 and has a base salary of $71,098 — later resumed evaluating potential NYPD hires and taking part in staff meetings.

A police source said Friday that the psychologist has now been relieved of her position and assigned to administrative duties. The Internal Affairs Bureau, meanwhile, is monitoring the criminal investigation.

There was no answer at Roudebush’s Austin, Texas, home.

Emily Dearden’s lawyer, Paul B. Bergman, said his client denied shooting her husband. He also said Kenneth’s claims in the suit “completely contradict statements he gave the police at the time of the incident a year ago.”

He also called it a “desperate and baseless attack.”

Additional reporting by Shawn Cohen