Piquerism, the sexual gratification yielded from the infliction of cutting, stabbing, and slicing wounds, remains an under-researched sexual paraphilic disorder with consequences for understanding, identification, detection, case linkage, and offender treatment. To help remedy that research deficit, a detailed case analysis is presented of a series of ‘ripper’ homicides to demonstrate common crime scene indicators and characteristics of piquerism. A case in which victims displayed overkill injuries has been chosen owing to the difficulty, even for seasoned investigators, to identify piquerism when the crime scene immediately suggests anger rather than a sexual motivation. In so doing, the knowledge base regarding this rare paraphilic disorder is expanded and directions for future research are noted.

Piquerism 是由切割、刺伤和切片伤口产生的性满足，仍然是一种研究不足的性反常障碍，其后果是理解、识别、检测、病例联系和罪犯治疗。为了帮助弥补这一研究缺陷，我们对一系列“开膛手”凶杀案进行了详细的案例分析，以展示常见的犯罪现场指标和皮毛癖的特征。选择了一个受害者表现出过度杀伤性伤害的案例，因为即使对于经验丰富的调查人员来说，当犯罪现场立即表明愤怒而不是性动机时，也很难识别出皮克癖。这样做，扩大了关于这种罕见的嗜好性反常的知识库，并指出了未来研究的方向。