Proof Positive (Amanda Jaffe Series #3)

New York Times bestselling author Phillip Margolin returns with a shocking and enthralling thriller about the way CSI evidence can be misused by a killer with his own twisted sense of justice.

doug Weaver is a defense attorney who believes the best of his clients, and Jacob Cohen, on trial for murder, is no exception. Yet Bernard Cashman, a forensic expert at the Oregon State Crime Lab, finds evidence that indisputably connects Cohen with the crime.

Frustrated and confused, Doug consults Amanda Jaffe, star of Margolin's spine-tingler Wild Justice. Amanda and her father, Frank, are working on a case that seems completely unrelated: gangster Art Prochaska is accused of murdering an informer. When Amanda starts looking too closely at the seemingly air-tight evidence in these two apparently unconnected cases, people start to die — and she discovers that a madman with the power to alter the truth is on the loose.