To our knowledge, this is the first paper that examines the sexual profile of rapists in Singapore. A semi-structured interview based on a questionnaire about sexual habits was conducted on 62 convicted rapists and a control group of 63 prisoners comprising 32 convicted for violent non-sexual offences and 31 for non-violent non-sexual offences. Significantly more rapists masturbated at least once a month and were exposed to pornography within six months before the offence when compared to non-violent controls. Violent controls did not differ significantly from rapists in any aspect of the sexual history. The greater similarity between rapists and violent controls lends support to the concept of rape as a violent rather than sexual offence. A subgroup of 17 'hypersexual' rapists were identified who were either having sex or masturbating very frequently but had still resorted to rape. Compared to the other 46 rapists, the 'hypersexual' rapists were more likely to have fantasised predominantly about rape or bondage and to cite domination, aggression or hostility as reasons for committing rape, suggesting an even stronger element of power and aggression than in their less sexually active counterparts.