Process of Investigation

Process of Investigation, 3rd Edition

Process of Investigation, 3rd Edition,Charles Sennewald,John Tsukayama,ISBN9780750679503






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A valuable handbook for investigators working in the private sector.

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Key Features

- Serves as a valuable reference tool for both the student and the professional
- Contains practical information that can be utilized in real-life investigative situations
- Includes two brand new chapters about interviewing, interrogations, and the Theory of Threat Assessment and Management


The Process of Investigation, Third Edition, is a book written to address the needs of the private investigator in the security field. Continuing in the tradition of its previous editions, this book covers essential topics which are often overlooked in works that concentrate on the public aspects of investigation. Investigative skills such as surveillance techniques, interviewing and interrogation, evidence, and confessions and written statements are all discussed, and supplemented with updated case studies and examples from the authors’ own experiences.

Major revisions to The Process of Investigation include mention and coverage of the effects of 9/11 on the security industry, the need to incorporate awareness of terrorism and terrorist activities when investigating any suspicious behavior, and two completely new chapters. Chapter 10 discusses interviewing and interrogations, and is written by Doug Wicklander and Dave Zulawski, premier experts in the field. Chapter 23 addresses the issues of workplace violence, and includes coverage of stalking, domestic violence spillover into workplaces, red flags, and the Theory of Threat Assessment and Management (TAM), among other topics. Additionally, other more minor modifications in legislation that have been passed and implemented since the last edition are addressed throughout the book.


Corporate and Private Investigative (P.I.) professionals working in the private sector, new professionals entering the security field (from the military and/or law enforcement).

Security managers, security consultants, Undergraduate students in 2- and 4-year colleges in Introduction to Security courses for Security and Law Enforcement majors.

Charles Sennewald


Charles "Chuck" Sennewald, an independent security management consultant, graduated from the US Army's Military Police School in 1949 and has held various positions in law enforcement and security, including assignments as a vice investigator with the Los Angeles County Sheriff's Department, security director of a major department store chain, and chief of campus security with the Claremont Colleges. He earned his BS degree in Police Science and Administration at California State University at Los Angeles. He is also the author of numerous security industry books, including the Butterworth-Heinemann titles: The Process of Investigation, Shoplifting, Security Consulting, and Effective Security Management. Mr. Sennewald, a Certified Security Consultant (CSC) and Certified Protection Professional (CPP) is the founder and first president of the International Association of Professional Security Consultants (IAPSC) and a member of ASIS International.

Affiliations and Expertise

Consultant & former Director of Security at The Broadway Department Stores, Escondido, CA, USA

View additional works by Charles A. Sennewald

John Tsukayama


John K. Tsukayama, CPP, CFE, PCI, Executive Vice President of Safeguard Services, Inc., started his investigative career in 1982 as a Revenue Officer with the IRS in San Francisco. He has since led thousand of investigations involving employee theft, embezzlement, workplace drug use, and sales, as well as kickbacks, fraud, and corruption perpetrated against business, charity, and government. Mr. Tsukayama holds the Walker Award from the Association of Certified Fraud Examiners for having the national high score in the Association’s 1991 certification examinations. He is a member of the American Society for Industrial Security (ASIS), the Association of Certified Fraud Examiners (ACFE), and the Association of Threat Assessment Professionals (ATAP).

Affiliations and Expertise

Executive Vice President, Safeguard Services, Inc.

Process of Investigation, 3rd Edition

Chapter 1 - The Investigative Process
Chapter 2 - A Comparison of Public and Private Sectors
Chapter 3 - Qualities of the Investigator
Chapter 4 - Managing the Investigative Function

Chapter 5 - Undercover Investigations
Chapter 6 - Surveillance
Chapter 7 - Background Investigations
Chapter 8 - Discovering Covert Crimes

Chapter 9 - Interviews and Interrogations
Chapter 10 - An Overview of the Interview and Interrogation Process
By: David E. Zulawski, CFI, CFE and Douglas E. Wicklander, CFI, CFE
Chapter 11 - Evidence
Chapter 12 - Written Statements, Admissions, and Confessions
Chapter 13 - The Use of Informants
Chapter 14 - Report Writing and Note Taking

Chapter 15 - Problems Arise: The What of Investigation
Chapter 16 - Crime and Solution: The How of Investigation
Chapter 17 - Identifying Suspects: The Who of Investigation
Chapter 18 - Finding Information: The Where of Investigation
Chapter 19 - The Time Factor: The When of Investigation
Chapter 20 - Establishing Motive: The Why of Investigation

Chapter 21 - Imagery
Chapter 22 - Computers in Private Sector Investigations
Chapter 23 - Targeted Violence Investigations


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