每當發生重大殺人事件，勢必引起社會集體焦慮，民眾會渴望知 道更多血腥的報導，但內心卻不斷地提問社會爲何會發生這種喪盡天 良的犯罪？作者試著根據新北市地方法院檢察署的起訴書跟臺大醫院 的司法精神鑑定報告書作爲探討的文本基礎，從這兩份已經被書寫詮 釋，固定下來的文本資料，透過Jaspers的方法學，從Erklaren的因果 解說進到Verstehen的真正理解，藉由鄭捷的故事脈絡去拆解某些犯 罪現象學的困惑。 首先是分析鄭捷生命中的三件重大心理創傷事件，同時對照著 Berardi ( 2015/2016)書上描寫的幾位無差別殺人者的故事。再從殺 人誓言的辯證，延伸至自戀性憤怒是如何走向失控的引爆點。作者進 一步試著歸納無差別殺人者的犯罪心理學診斷要件：道德困乏、同理 能力挫敗、格格不入的社會疏離及惡性自戀的質變。單從DSM診斷 難以說明無差別殺人者的精神症狀與心理狀態，應竭力避免在犯罪事 件發生之後，司法系統及專業人員的介入，無心卻造成反治療性的二次創傷。但又唯有盡力去重構犯罪真相，此一大量殺人事件所造成的 社會傷害才得以有機會修補，朝向修復式正義來實踐。

When the mass murder events happened, the media provoke the anxiety of society quickly. Everybody eager to know how offender developed to such a state of losing humanity. The author tried to reframe the psychopath by the method of narrative analysis through the context of indiscriminate killer on the official text from the indictment document and forensic psychiatrist assessment report. Using the methodology of existentialistic philosopher Jasper, we expect to Verstehen the phenomenon of psychopath through the way of Erklaren. There are at least three obvious narcissistic injury events of the offender’s life resulting in the narcissistic rage and revenge acting out of his hate crime. Due to the unavoidable limitation in using the depressive spectrum and personality theory of the DSM diagnostic system to formulation the evil of psychology, the author tried to formulate the indiscriminate killers with four specific indicators: moral fatigue, empathy failure, social intimacy disintegration, malignant narcissistic transformation. The more comprehensive figure out the psychological profiling of the offence, the more possible to achieve the restorative justice as advocating empathy for the suffering of the victims’ family. Hopefully social collective healing should be done in the end.