Possible Clues:

• My group gets to park in sight of thriller writer's creation
• Hitchcock forte
• Good judgement all over The States ahead of precarious uncertainty
• Hitchcock was a master of it
• South American writers start to exploit uncertainty in stories?
• Feeling about American, quiet in expectation
• South American writers beginning to experience apprehension
• Poet has no right to internalise American apprehension
• Anticipation of wisdom keeping American quiet
• Excited uncertainty in South American author's start of epic