Peter Samuel Cook (died 9 January 2004) was a serial rapist who attacked women in the city of Cambridge and so became known in the press as the Cambridge Rapist. The majority of Cook’s victims were students of the University of Cambridge, whom he attacked after breaking into their bedsits and flats. He was active between October 1974 and April 1975, and was also called the 'hooded rapist' because of a distinctive leather mask he wore whilst carrying out his crimes. The mask was reported to be "stitched from an old leather shopping bag. The zipper-mouthed mask had the word 'rapist' painted in white across the forehead".