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In this essay, the phenomena of Fear and Angst/Anxiety are analyzed according to Martin Heidegger's thought only to prove that this significant field is defined as a range of inauthentic fear toward authentic angst/anxiety and it is revealed as »happening of truth« or strife between world and earth, in Film world? Monster, as embodiment of evil and constitutive pivotal element of Horror Cinema, is manifested in various appearances of phenomenon of fear. Horror Cinema via projecting fundamental elements of Heidegger's hermeneutic analysis (i.e. world, death, guilt, projection, authenticity and inauthenticity) in relation to Dasein in terms of a cinematic expression, makes the disclosure of »happening of truth« in the film world possible via audience contribution, as an interpreter Dasein engaged in this world, and the revealed »happening of truth« in this Cinema is phenomenon of Fear and grounding attunement of angst/anxiety which is uncovered in a cinematic world.