▁British ▁film ▁in ▁almost ▁two ▁dec ades , ▁which ▁was ▁given ▁an ▁R ▁rating ▁for ▁its ▁v icious ▁and ▁explicit ▁str ang ulation ▁scene . ▁ ▁One ▁of ▁the ▁first ▁films ▁about ▁a ▁fan ' s ▁being ▁disturb ingly ▁obs essed ▁with ▁their ▁id ol ▁was ▁Cl int ▁East wood ' s ▁director ial ▁debut , ▁Play ▁M ist y ▁for ▁Me ▁( 1 9 7 1 ), ▁about ▁a ▁California ▁disc ▁j ockey ▁purs ued ▁by ▁a ▁dist urbed ▁female ▁listener ▁( J ess ica ▁Walter ). ▁John ▁Bo orm an ' s ▁Del iver ance ▁( 1 9 7 2 ) ▁followed ▁the ▁per il ous ▁fate ▁of ▁four ▁Southern ▁business men ▁during ▁a ▁week end ' s ▁trip . ▁In ▁Francis ▁Ford ▁Co pp ola ' s ▁The ▁Con vers ation ▁( 1 9 7 4 ), ▁a ▁bug ging - device ▁expert ▁( G ene ▁H ack man ) ▁system atically ▁un cover ed ▁a ▁cover t ▁murder ▁while ▁he ▁himself ▁was ▁being ▁sp ied ▁upon . ▁ ▁Alan ▁Pak ula ' s ▁The ▁Par alla x ▁View ▁( 1 9 7 4 ) ▁told ▁of ▁a ▁consp i racy , ▁led ▁by ▁the ▁Par alla x ▁Corporation , ▁surrounding ▁the ▁assass ination ▁of ▁a ▁president ial - c andid ate ▁US ▁Senator ▁that ▁was ▁witness ed ▁by ▁investig ative ▁rep orter ▁Joseph ▁F rad y ▁( W ar ren ▁Beat ty ). ▁Peter ▁Hy am ' s ▁science ▁fiction ▁thr iller ▁Cap ric orn ▁One ▁( 1 9