But Evangelou, who has a pentangle tattooed into his forehead, caught her and snarled: "I haven't f***ing finished with you yet, we're going to do all the positions," Snaresbrook Crown Court heard.
Evangelou dragged her back up the stairs to his room telling her: "I've got a gag and handcuffs."
The room was a shrine to the devil, decorated with satanic posters and crammed with books on black magic, the court heard.
Evangelou has occult tattoos all over his body and wears a pendant made of single human tooth.
The rapist showed no trace of emotion as prosecutor Hugh French read a victim statement from the victim to the court.
She said: "It will be with me for the rest of my life. It's still hard for me to comprehend I'm here.
"I remember thinking I'm never escaping, that's what he told me.
"Not even sleep can provide an escape, his face haunts my nightmares. It was no surprise when I was diagnosed with post traumatic distress disorder."
She added that she had struggled with work since the attack, and was no longer comfortable around men.
Evangelou, was found guilty of sexual assault and rape after a trial at the same court in November of last year.
Andrew Collings, defending said he could not be certain about her suffering PTSD.
He said: "I've seen no medical evidence of that. He is nothing if not stoic about the position he finds himself in.
"The complainant, perfectly willingly, interested in your beliefs as a Luciferian, and your bikes, a Harley Davidson, agreed to go back to your flat.
"You spent a time drinking and smoking cannabis. You came up behind her and grabbed her.
"Eventually she got down the stairs completely naked. You then dragged her back up the stairs.
"She banged on a window for help to get the attention of a neighbour, indeed that neighbour called the police. She was really scared."
The court heard the teenager managed to get most of her clothes and eventually escaped.
Judge Finucane added: "She ran onto the street, where she was found collapsed and panicked.
"She has suffered very greatly indeed as a result of what you did to her."
Evangelou, of Pembroke Street, Barnsbury, was jailed for nine years.