A Muslim man who raped women to 'teach them a lesson' for being on the streets at night was jailed indefinitely today because of the danger he poses to women.
Sunny Islam, 23, who comes from a strict Muslim family, dragged his terrified victims - including a 15-year-old - from the street at knifepoint, bound and assaulted them during a two-month reign of terror.
Police fear that Islam may have attacked many more.
Three of the assaults took place close to his home in Barking, east London, while a fourth occurred in nearby Forest Gate.
Judge Patricia Lees, sentencing him to a minimum of 11 years, said: 'The harm you have done to your victims is incalculable.
'The nature and extent of these offences drives me to the conclusion that you represent an extreme and continuing danger to women, particularly those out at night.'
He was traced through the number plate of his girlfriend's car after he kidnapped and raped the 15-year-old in September 2010.
He grabbed her from behind as she walked home with a friend and bundled her into the car at knifepoint before driving to a secluded spot where he raped her twice despite her claiming she was only 11 years old.
Judge Lees said: 'You told her you were going to "teach her a lesson", and similar things were said to the other women.
'Those words are a chilling indictment of your very troubling attitude towards all of these victims.
'You seem to observe women out at night as not deserving respect or protection.
'I have no doubt that you were out that night looking for a victim, as you were on each of these occasions.'
The teen, who feared she would be murdered, was in court and smiled as her attacker was jailed.
In a victim impact statement read to the court, she said: 'No one will ever understand the flashbacks - they are so real. At night, I lay in my bed and it is like I am there.
'It is like a screen in my mind forcing me to relive that night again and again.
'People will say time will heal, but I think time has helped me accept the truth - that I will never escape what has happened to me.'
After his arrest, Islam's DNA was linked with three other attacks near his home in Barking, prosecutor Sara Lawson told Woolwich Crown Court.
'He treated me like an animal and made me feel worthless. I thought I was going to die'
The judge said on July 8, 2010 he subjected a 20-year-old prostitute to 'his trademark double rape' and then tied her up, repeatedly punched her in the face and stole her wallet.
She said: 'He treated me like an animal and made me feel worthless - I thought I was going to die.'
Six days later, in Forest Gate, he struck again on a 28-year-old when he dragged her into his car and forced her to commit a sex act.
She managed to kick out the back window of his car and escape despite being throttled.
His fourth victim, also attacked in September, did not come forward until police found the 31-year-old's blood in the back of the car along with a knife he used to threaten his victims and plastic ties he bound them with.
She was repeatedly repeatedly punched in the face until she was bleeding and then tied up and raped twice.
Islam, who told the jury he was a practising Muslim, was convicted of seven charges of rape, one of sexual assault and one of kidnap.
Tana Adkin, defending, said: 'The only piece of mitigation is his age. He was 21 at the time of these offences and comes from something of a strict background.'
His mother, in religious dress, sat with her covered head bowed throughout and wept as her son was jailed.
Judge Lees said: 'The fact that you have attacked these women not withstanding your background must represent your own wholly warped personality.'
After the trial, Det Chief Insp John Sandlin, of the Homicide and Serious Crime Command who investigated the offences, said they believed there may be other victims who had not come forward, but Islam has not been charged with any further offences.