The action of the film occurs over a five-day period, from a Friday through a Tuesday morning.[Friday]The story officially begins in downtown San Francisco with a view of a cable car, as an attractive, elegantly-dressed (obviously rich) and coiffed, high-heeled blonde woman with a black suit crosses the street at Union Square.Two of the counselors, Barry (Willie Adams) and blonde Claudette (Debra S.Hayes), left the gathering to make out.As hey kissed and groped each other, some unseen mysterious killer ascended the stairs and found them in a state of partial undress.They pulled the emergency brake, and exited the train onto the racks, where Sean was able to push Jason onto the electrified hird rail.After Myers turned up the temperature controls outside the room, Budd was strangled (with a cord) and killed(# 4 death)by the brutal killer while checking the thermostat gauge outside the room (without her knowledge), just before the nude nurse also succumbed by having her face repeatedly dunked and scalded to death in the 130 degree water(# 5 death).