But to Jack, Francis was not “reactive” enough.

He said the student was too tense, and offered to give him a handjob.

Francis was reluctant, but wanted to get it done with. “But that handjob didn’t work,” he added. Jack then suggested that Francis masturbate himself in front of him.

“I did it, and then he continued his whole tickle process thing, and in the end he gave me $55 and I was on my way,” he said. “And it’s only when I was on my way that I realised that something was very wrong here.”

Another PhD candidate who lived next to Jack and declined to be named said that he’d never seen him because their working hours were different.

“I come back to my room quite late,” he said, adding that he would hear what sounded like two people having sex next door. “Sometimes I come home early and I hear that noise.”

“In my view, if both partners know what they’re doing, it’s okay; they’re adults anyway,” the PhD candidate added. “But when I heard he [scammed] people like what you said, it’s really [disgusting]. That act of scamming and molesting people is unacceptable.”

Francis said of his ordeal: “Honestly I didn’t know why I didn’t move out, or shout, or scream,”

“I feel like if I were to scream and say ‘no, this is not right’, what was I going to do? I’m tied up to the bed, he’s in his room, am I going to run out naked?”

Francis’s allegations come more than a year after a suspected voyeur was banned from living on campus for allegedly taking videos of other male residents showering in the toilets of Hall 16. There were allegedly 66 videos of male students showering saved in the suspect’s phone.

A 31-year-old man had also been arrested more than a year before for allegedly molesting a female undergraduate student at Hall 1, after reports of a masked man attempting to enter rooms circulated.

“He could be recording the entire incident and I wouldn’t even know,” Francis said.