Pornography fantasy led Customs officer to rape young woman Former Customs officer Stephen Michael Adams developed a rape fantasy while viewing hours of pornography as part of his job and acted out the crime on a young woman. A FORMER Customs officer who developed a rape fantasy while viewing hundreds of hours of pornography as part of his job acted out the crime on a vulnerable 19-year-old after threatening her with a gun. Stephen Michael Adams appeared in Western Australia's Supreme Court today to be sentenced for 31 crimes carried out after a career as an Australian Federal Police (AFP) officer and a Customs official. Adams had pleaded guilty to two counts of rape, armed robbery, attempted armed robbery, deprivation of liberty and various fraud offences totalling almost $75,000. The court was told how the 44-year-old carried out sophisticated frauds after becoming obsessed with why people committed crime during his time with the AFP - and then developing a more sinister preoccupation during his four years with Customs. Defence lawyer Richard Lawson said during that time, Adams was tasked to watch hundreds of hours of pornography, and developed an "intense interest" in a "seduction rape scenario." "He watched pornography for days on end in the job, and that was a major contributing factor to the future sexual offending," Mr Lawson said. In March last year, he decided to turn his fantasy into reality. The court was told Adams placed a BB gun inside his pants and confronted the teenager as she got off a bus in West Perth. After bundling her into an alleyway, he raped her twice, took her passport and while wielding a knife warned her against talking to police. A month later, he attempted to rob a 26-year-old woman in the same area, but was foiled when she threw her bag at him and fled. It was only in December last year, after being arrested for a motoring offence, that Adams' fraud and sex crimes came to light. Searches of his home and a storage locker uncovered what police described as a "rape kit" - containing weapons, a disguise and Viagra tablets. Prosecutor Derrin Krueger said psychologists had detected "systemised predatory behaviour" in Adams. His frauds utilised identity details obtained through his immigration job, while Adams used internet cafes and false addresses to cover his tracks. Mr Lawson said Adams found it "very easy" to continue his frauds, and was generous and flashy with the money, spending it on holidays and partying. He also used it to gain revenge for alleged sleights, including stealing an AFP uniform after he was denied a transfer and breaking into a neighbour's flat in Darwin. "He was empowered by the cleverness of the offending, and took pride in its complexity," Mr Lawson said. Judge Ralph Simmonds will sentence Adams tomorrow.