Chapter 17

Identifying Suspects

The Who of Investigation


This chapter asserts that while there are several important who questions to ask, the most basic one is: who is responsible for a given act? The chapter examines different methods for addressing the who factor, with accompanying case studies for each method. These methods include the process of elimination (starting with eliminating who didn’t commit the act, until only a few suspects are left); reading the physical evidence; careful and thorough questioning during the investigative interview; and combining techniques, such as interviews, physical evidence, observation, informants, decisiveness, and luck. The case study of “Thefts from Old Midtown Church” is further explored for the ...

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