This comprehensive guide on criminal investigation provides a field-ready toolkit for police officers, investigators, legal practitioners, and students of criminology. With a strong emphasis on practical application, the book explains essential elements of police investigations including crime-scene protection, documentation, evidence preservation, interrogation and interviewing methods, suspect profiling, witness handling, surveillance strategies, digital evidence, and report writing. Each chapter distills complex investigative tasks into simple, actionable “mantras,” offering step-by-step techniques, checklists, examples, and common pitfalls to avoid during high-pressure investigations. The content aligns with modern investigative standards and includes insights into coordination with forensic experts, maintaining chain of custody, complying with legal requirements under criminal procedure, and improving case quality for prosecution. Designed to enhance field efficiency and investigative accuracy, the book supports both classroom training and on-ground policing. Its clear structure, practical illustrations, and professional insights make it an invaluable companion for law-enforcement agencies, investigators, students, and all stakeholders involved in the criminal justice system.






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