Disturbing documentary reveals horrific details.

Gaddafi kept the head of an enemy in his freezer and had a dungeon built below a university where he would rape students, new documentary reveals

• Gaddafi ordered the hit men to decapitate one of his victims to prove he was killed
• The head was stored in a freezer for decades and viewed periodically by the despot
• He also ran a sex dungeon at Tripoli University where he would rape coed after giving speeches
• These disturbing revelations were made in the documentary 'Mad Dog: Inside the Secret World of Muammar Gaddafi'

More disturbing details have emerged telling of former dictator Muammar Gaddafi’s iron-fisted rule over Libya.

The despot kept the severed head of one of his enemies in a freezer for 25 years and built a secret sex dungeon on the campus of a college specifically to rape coeds, according to a new documentary on his brutal regime.

He also stored the bodies of other rivals he had killed and would visit them occasionally at a walk-in freezer. The sex chamber was built on the campus of Tripoli University.

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Dictator: Former Libyan leader Col. Muammar Gaddafi gestures as he enters the U.N. headquarters in 2009 for the United Nations General Assembly

The barbaric horrors are revealed in British filmmaker Christopher Olgiati’s new documentary called ‘Mad Dog: Inside the Secret World of Muammar Gaddafi.’

The film includes an interview with a renegade CIA operative Frank Terpil who ran a ‘murder for hire’ team used by Ghaddafi. The dictator dubbed it ‘Murder Incorporated.’

Terpil says in the film he was given $1m to kill one of the dictator's rivals and deliver his head back to Libya.

Terpil claims Ghaddafi, who was killed by rebels two years ago after his regime was overthrown, kept the head in a freezer along with the bodies of other victims he had murdered.

‘I was in Geneva… [a Ghadaffi relative] opened up a letter of credit for a million dollars for [the target's] demise, on the caveat that his head be delivered back in a cooler to Libya so Gaddafi could actually look at the results of the work,’ he says in the biopic, according to the Post.

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Safer now: Libyan students at the University of Tripoli, formerly Al-Fateh University, gather for an open day at the Engineering Department on October 9, 2011 -- the school not long ago housed a rape dungeon run by Gaddafi, according to a new documentary

Terpil fled to Cuba after being sentenced to 53 years in prison for illegal arms deals, according to the New York Post.

A separate source claims the depraved dictator would often visit the frozen bodies of his enemies, sometimes as much as 25 years later.’

The documentary team also found evidence of the depraved dictator's secret sex den at Tripoli University he had built to rape students after giving speeches on the campus.

‘The untouched room contains a bed, Jacuzzi and area where the women were checked for STDs, with surgical instruments, rubber masks and anaesthesia,’ Olgiati told the Post.

‘[Gaddafi] was utterly charming, utterly ruthless and stupendously rich,’ Olgiati continued. ‘He was driven solely by his lust for power.’

‘Mad Dog’ will air Friday on Showtime.

An upcoming documentary on late Libyan dictator Moammar Khadafy reveals shocking new details of the ruler’s brutal regime, including keeping his enemies’ corpses in freezers and maintaining a secret sex den on the Tripoli University campus where he’d rape coeds.

In Christopher Olgiati’s “Mad Dog: Inside the Secret World of Muammar Gaddafi,” the director uncovers the leader’s depraved sexual predilections, barbaric revenge tactics and lifestyle he led making $1 billion per week, by interviewing those who were closest to him.

The Showtime doc airs this coming Friday, days before a Libyan trial of Khadafy’s sons, Al-Saadi and Seif Al Islam, and his spy chief, Abdullah Senussi.

Among those interviewed, Olgiati tracked down Khadafy henchman Frank Terpil, a rogue CIA agent in Cuba after being sentenced to 53 years in Manhattan State Supreme Court for illegal arms dealing. Terpil, according to the doc, ran what Khadafy called his “Murder Incorporated,” a “murder for hire” team with fellow former CIA operative Edwin Wilson.

Terpil recalls one hit in which the leader demanded that the head of his intended target be brought to him in a cooler. “I was in Geneva with Wilson. [A Khadafy relative] opened up a letter of credit for a million dollars for [the target’s] demise, on the caveat that his head be delivered back in a cooler to Libya so Khadafy could actually look at the results of the work,” he says.

Another source in the doc explains how Khadafy liked to visit his dead enemies. “He’d keep his victims in the [freezer] and visit their bodies frozen” for 25 years.

Olgiati and producer Michael Chrisman also gained access to the leader’s secret sex den where he’d rape women after his rambling speeches at the local university. The untouched room contains a bed, Jacuzzi and area where the women were checked for STDs, with surgical instruments, rubber masks and anaesthesia.

Olgiati told us of Khadafy, “He was utterly charming, utterly ruthless and stupendously rich. He was driven solely by his lust for power.”