[This is an outdated edition. There is a new Second Edition of this casebook, Criminal Constitutional Limits on Policing .] This is a law school casebook intended to be used in the Criminal Procedure I (Investigations) course. Coverage includes Fourth, Fifth and Sixth Amendment investigation-related rights along with discussion of the Fourteenth Amendment in the criminal procedure context.This casebook provides all the necessary source the critical cases that shape the doctrine, explanatory cases that illustrate how the law is applied, along with Constitutional provisions, statutes, primary source materials, and statistical data. Clarity is a guiding principle. We provide narration where helpful to solidify students’ understanding and to pace the course through a coherent and intuitive structure. Cases are carefully edited to maximize readability and minimize traditional casebook bloat.