Bob Cummings was a sleazy customer at the Weatherfield Arms who was drinking in there the night that Shelley Unwin's hen party called in on their way into town. Bob was immediately attracted to Shelley and made a beeline for her, much to Tracy Preston's anger and annoyance as she was determined to land herself a bloke for the night. Shelley quickly grew tired of Bob's groping antics on the dance floor and stalked off. Bob and his mate Phil Crane were on a dating bet to see how many women they could bed and Bob, eager to claim "victory" for a bride on her hen night, showed a concerned Phil his trump card - a packet of rohypnol powder which he intended to slip into her drink.