"In Proving the Unprovable, Professor Slobogin has done the undoable; he has produced a probing critique of the legal rules for admitting expert mental health testimony that had me turning the pages as if it were a suspense novel. After trenchantly analyzing current stands for admissibility, he suggests innovative approaches to protect the reasonable contributions that mental health experts can make. I doubt that any expert, no matter how experienced, who reads this book will view his or her task on the witness stand in quite the same way again." --Paul S. Appelbaum, MD, Professor of Psychiatry, Director, Division of Psychiatry, Law and Ethics, Department of Psychiatry, Columbia University College of Physicians and Surgeons