This law school casebook provides different perspectives to fundamental doctrinal issues related to the law of criminal investigations. The authors extensively review the Fourth Amendment and remedies for violations. Addresses confessions and the voluntariness requirement, police interrogation and the self-incrimination clause, and the Sixth Amendment right to counsel. The work concludes with an overview of entrapment, and eyewitness identification procedures. This book is a complete, unchanged reprint of Chapters 1 through 10 of Dressler and Thomas' Criminal Procedure: Principles, Policies and Perspectives.