It was every woman's worst nightmare but Duncan Turner had not reckoned on the guile of his latest victim.
After being subjected to a sickening attack as she walked alone through a city centre subway, the 22-year-old refused to be cowed by the threats and violence of her attacker and made off with his sunglasses in hand.
Now, a year later and with her assailant safely behind bars, the victim has spoken out in the hope that her example would spur other assault victims to come forward.
She said: "People say it is hard to get a conviction, people don't believe they can get a conviction but this proves the opposite.
"I hope it gives some people strength and belief to come forward.
"It was such a relief that I didn't have to go to court but I would have done and would have got the strength from somewhere to make sure we could get this conviction.
"I wanted to make sure I had done everything I could to get this conviction.
"It is for other women who may get attacked like this that I got the strength to make a statement to the police."
The woman, who is from Birmingham, said she "didn't know" why she picked up the glasses.
"But I am glad that I did as I know without them I don't know if we would have caught this man," she added.
"It was just instinct to pick them up. I didn't realise the glasses would be so crucial."
The woman said she would not let the attack affect her emotionally, but added: "It will always be with me.
"I just try to put it out of my mind. I try not to think about him.
"I am more aware of my own safety and it does dictate what I do a bit. I won't go into subways any more and if I hear footsteps behind me I let that person overtake me as I don't want them behind me."
She said she was hysterical after the attack and "cried solidly for about half an hour".
However, she added: "I always knew I was going to go to the police but it took me a while as I needed to clear my head."
"If it gives one person the strength to come forward and help someone get convicted then it is worth it.
"I hope it shows to other people going through a similar thing that there are ways of catching these people. It is not just your word against theirs.
"I would urge people to contact the police.
"You are not on your own and they are there to support you."