Reynhard Sinaga posed as a Good Samaritan to lure men back to his flat before attacking them as they lay helpless on the floor (Picture: Police handout)

The UK’s most prolific serial rapist has been jailed for at least 30 years after drugging 48 men and filming himself attacking them as they lay unconscious in his city centre apartment.

Reynhard Sinaga, 36, has been linked to more than 190 potential victims – 70 of whom police have yet to identify.

He prowled the streets of Manchester in the early hours hunting for lone, drunk young men around the nightclubs near his flat.

Posing as a Good Samaritan, the slightly-built student would offer them a floor to sleep on or the promise of more booze before lacing their drinks with GHB.


His victims – most of whom were heterosexual – had little or no memory of the hours that followed when Sinaga videoed himself taking advantage of them.



Many left his flat unaware they’d even been attacked, jurors at Manchester Crown Court were told.

Sinaga bragged about one of them during a phone call to a friend, paraphrasing the Little Mix song Black Magic: ‘Take a sip of my secret potion, I’ll make you fall in love.’

He was caught when one of the men regained consciousness and fought him off before snatching his phone and later handing it to police.

Today he was jailed for life with a minimum term of 30 years.

Judge Suzanne Goddard QC told him: ‘You are an evil serial sexual predator who has preyed upon young men who came into the city centre wanting nothing more than a good night out with their friends.

‘One of your victims described you as a monster. The scale and enormity of your offending confirms this as an accurate description.’

Reynhard Sinaga was jailed for at least 30 years (Picture: Police Handout)

The judge said: ‘Rarely, if ever, have the courts seen such a campaign of rape as this, covering so many victims over a prolonged period.’

She told the court the true scale of Sinaga’s offending may never be known but that police appeared to have established 195 men were filmed by the defendant while unconscious.

Judge Goddard added: ‘It is ironic that were it not for the films that you took of your evil crimes it seems that most of these offences would not have even been discovered, let alone prosecuted.

‘Your actions show you as a dangerous individual with no sense of reality.

‘In my judgment you are a highly dangerous, cunning and deceitful individual who will never be safe to be released.’

Sinaga had shown ‘not a jot of remorse’, she continued, and noted at times he appeared to be ‘actually enjoying the trial process’.

His sentencing prompted Home Secretary Priti Patel to asked for a review of whether controls of drugs such as GHB, which is currently class C, were ‘tough enough’.

She said: ‘I extend my heartfelt sympathy to his victims and my gratitude to the police and prosecutors who worked on this case and put him behind bars.

‘I’m deeply concerned by the use of illegal drugs like GHB to perpetrate these crimes and have asked the independent Advisory Council on the Misuse of Drugs to expedite a review looking at whether our controls for these drugs are tough enough.’

Sinaga (middle) has been found guilty of a total of 159 offences committed between January 2015 and May 2017 (Picture: Julia Quenzler /SWNS)

Details of the case – Britain’s largest ever rape prosecution – can be reported following the lifting of restrictions after four separate trials over the space of 18 months.



Sinaga insisted the encounters were consensual, claiming his victims approached him in the street before accompanying him back to his flat and pretending to be dead during sex games.

He said they agreed to be filmed and told jurors they slept together on the floor because he didn’t want to ‘make a mess of my bed’.

But prosecutor Iain Simkin branded the account ‘preposterous’ and played footage in court showing some of his victims snoring.

The Indonesian national has now been found guilty of a total of 159 offences committed between January 2015 and May 2017.

They include 136 counts of rape, 13 counts of sexual assault, eight counts of attempted rape and two counts of assault by penetration.

CCTV footage of Sinaga inside his apartment block (Picture: Police handout)

His block, close to two nightclubs, provided a perfect vantage point from which to identify his targets (Picture: PA)

It was within walking distance of two nightclubs and a pub (Picture: Greater Manchester Police)

Many of his victims had earlier been to the city centre nightclubs Factory and Fifth Avenue.

Sinaga’s apartment, situated next to Factory in Princess Street, provided a perfect vantage point from which to identify his targets.

It is thought he laced alcoholic drinks with a drug such as GHB, also known as liquid ecstasy.

Overdoses of the odourless, colourless substance can kill, the court heard, but it was a risk that Sinaga was prepared to take with complete strangers to satisfy his perverted desires.

To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video

Bottles of alcohol used to spike victims in Sinaga’s flat (Picture: PA)

Bedding strewn on the floor where most of Sinaga’s attacks took place (Picture: PA)

Sinaga kept ‘trophies’ of his crimes, such as watches and wallets, downloaded social media pages belonging to some of them and took photos of them while they lay naked or semi-naked.

The court heard that none of the victims – many in their late teens or early 20s – wanted to know details of what had happened to them when traced by police.


Some have chosen not to tell their family or close friends of the trauma.

Statements from a number of them were read out in court.

One said: ‘That night was just like any night out with my mates. What I didn’t know was that there was a monster lurking in the background waiting to take advantage of my drunken state.

‘I want Sinaga to acknowledge what he has done to me and show some remorse but I doubt that will ever happen.’

Another said: ‘I genuinely thought he had helped me. How wrong could I be? The day I gave evidence was the hardest day of my life.

‘I have a message to you, Sinaga. I am not going to let your ruin my life. I am going to fulfill my career plans and live a happy, content life.’

The judge described Sinaga as ‘an evil serial sexual predator’ (Picture: Cavendish Press (Manchester) Ltd)

She added that he had shown ‘not a jot of remorse’ (Picture: Cavendish Press (Manchester) Ltd)

Assistant Chief Constable Mabs Hussain, of Greater Manchester Police (GMP), said: ‘Not much was known about Reynhard Sinaga prior to his final victim telling police of his ordeal and he had never previously come to the attention of GMP with regards to any criminal incidents.

‘To the rest of the world he came across as an engaged member of society who was studying for a PHD qualification and had a small circle of law-abiding friends that he would socialise with.

‘However beneath that façade was a serial sex offender, who we now believe to be Britain’s most prolific rapist.

‘The fact that he was able to cover-up his true nature for so long, just serves as further evidence of his calculating criminal nature.’


Mr Hussain added of Sinaga’s victims: ‘I can only imagine how devastating this news must have been for them but the bravery that these men have shown in engaging with officers and support workers in an effort to come to terms with what happened is nothing short of incredible.’

To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video

Specialist police officers and victim support services are on standby to hear from anyone who believes Sinaga may have approached them on a night out.

Mr Hussain added: ‘My first appeal would be to anybody who may think they have had contact with Reynhard Sinaga, the circumstances as reported have brought back some memories and they suspect they have been on a night out and met somebody like Reynhard Sinaga to contact the police.

‘We have specialist officers waiting, we have a helpline where the numbers are available and we are working with specialist victim support services including St Mary’s Sexual Assault Referral Centre, Survivors Manchester and Victims’ Services.

‘At the forefront of this investigation and our primary objective throughout has been to provide the support to the victims and I would encourage them to come forward. We have the specialist services to provide that support.’

How to report an attack or seek support Greater Manchester Police’s dedicated incident room contact details: Those wishing to speak to police and make a report relating to Reynhard Sinaga are asked to contact: 0800 092 0410 (calls made from within the UK) / 0207158 0124 (international calls). Anyone affected by the case who would like to seek support from specialist agencies can contact: 0800 056 0154 (calls made from within the UK) / 0207158 0011 (international calls).