Private equity executive raped and tortured women at his Manhattan apartment, prosecutors say

NEW YORK — A private equity executive turned his New York City apartment into a torture chamber of ''grotesque sexual violence," Manhattan prosecutors said Thursday. He is accused of raping six women over five months in a depraved rampage in which he allegedly punched, waterboarded and shocked victims with a cattle prod and kept recordings of the assaults as trophies.

Ryan Hemphill, who remains jailed after his arrest last month, pleaded not guilty to a 116-count indictment charging him with predatory sexual assault and other crimes dating to last October. The 43-year-old, who is also a lawyer, threatened to have victims arrested or disappeared in a bid to keep them silent, prosecutors said.

''The defendant told these survivors that he was untouchable,'' Manhattan District Attorney Alvin Bragg said. ''The indictment makes clear that he was wrong.''

Hemphill sat quietly in a khaki jail suit, his cuffed hands clutching a cross behind his back, as a prosecutor described his alleged crimes in gruesome detail.

If convicted, Hemphill could spend the rest of his life in prison. He was previously acquitted in 2015 of choking and holding a knife to his ex-girlfriend's throat after testifying that he enjoyed strangling her during sex.

''We have reason to believe these six victims are only the tip of the iceberg,'' Manhattan Assistant District Attorney Mirah Curzer told Judge Ann E. Scherzer.

Hemphill's apartment, near the Empire State Building, was outfitted with numerous surveillance cameras, and investigators have recovered images showing dozens, if not hundreds, of other women, many of them naked and blindfolded, Curzer said.

Investigators also found hundreds of bullets and high-capacity magazines, and a large amount of drugs, including heroin, cocaine, amphetamines, and fentanyl, prosecutors said.

Hemphill met the six women through websites, including some that specialize in ''sugar daddy'' arrangements for women seeking wealthy romantic partners, Curzer said.

He told the women he was into role play and dominance and offered them large sums of money in exchange for sex and companionship, though he ended up not paying some of the women or giving them fake cash instead, Curzer said.

As Hemphill got to know the women, he convinced them to confide their past sexual traumas, which he then deliberately reenacted as he assaulted them, Curzer said. He took advantage of some victims' inexperience, the prosecutor said, or crossed boundaries that victims had clearly articulated.

Hemphill is accused of tricking victims into ingesting substances that rendered them unable to fight back, using handcuffs and other restraints on them, wrapping their heads and faces with duct tape, slapping and punching them, and torturing them with a cattle prod and shock collar.

Hemphill kept one victim shackled to a bed for hours while she begged him to let her go, Curzer said.

Hemphill's alleged conduct is ''truly shocking to the conscience,'' and he ''has made clear that he has no regard for the law or the courts,'' Curzer said.

To keep women quiet, Hemphill boasted about connections to law enforcement and organized crime, prosecutors said, and claimed that because the women had accepted offers of money, it was them who would be arrested.

Hemphill is charged with bribing a witness and, according to prosecutors, drew up a contract in which he agreed to pay a woman $2,000 in exchange for dropping a complaint she filed with police. He is also accused of forcing some victims to record videos in which they stated that they had consented to being abused.

''The power imbalance in his predatory acts could not be more clear,'' Bragg told reporters. ''He wielded his law degree and money as both sword and shield, coercing and silencing survivors.''

The arraignment happened down the hall from disgraced movie mogul Harvey Weinstein's rape retrial.

Scherzer ordered Hemphill to remain jailed without bail after prosecutors raised concerns that his predicament, combined with his wealth and connections — including a history of philanthropy and family real estate holdings — could give him the means and incentive to flee the country.

Hemphill's lawyer, a public defender assigned to represent him at least through his arraignment, had urged Scherzer to move him to a rehabilitation facility to deal with substance abuse issues.

Scherzer ruled that, given the fact pattern laid out by prosecutors, ''including efforts to dissuade by force and threats to witnesses from testifying against him,'' jailing him was the only way to ensure Hemphill would return to court.

Hemphill's alleged behavior, the judge said, ''shows his extent to which he's willing to go to protect himself from facing these charges."