Lynn Poole's popularity as producer of the Johns Hopkins TV Science Review and as author (see Today's Science and You and Your Trip Into Space) readies this fascinating survey of criminalistics for wide appeal. Included among the aspects of the work of science for law enforcement is the chemical process- of testing by gradient; lie detecting; testing by spectrographs; the work of the microscope and the X-ray; and the use of fingerprints and other tracers when culprits are on the run. Interesting material here for anyone who loves the hunt, and emphasis on the correlation of police and science and on the role of scientific evidence as it leads to confession- give solid perspective on the world of law.