The article points out the role of psychological trace in cracking the case through the analysis and study of the psychological trace of the criminal of and exceptionally violent murder.

本文通过对一起特大抢劫杀人案件中案犯心理痕迹的分析研究，指出心理痕迹在侦破案件中的作用。

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He had an "extensive and violent criminal history" and was considered armed and dangerous, according to police.

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Guerrero has seen a growing movement of self-defence groups in response to violent criminal gangs and the failure of police to guarantee security.

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They had learned that Jenkins hired a two-bit gumshoe named Thomas ("Papa Bear") Miller--a New Orleans operative with a long, sometimes violent criminal record.

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