Shock is two stories in one. The first half is Kitty Dukakisâ€™ 20-year battle against depression, along with alcohol and drug addictions. She tried every medication and treatment available, but it was not until she got electroconvulsive therapy five years ago that she could reclaim her life. In the other half of the book, Larry Tye looks at the science behind ECT and its dramatic yet subterranean comeback. Shock shows how ECT offers a better chance of overcoming depression and other disabling mental illnesses than the best antidepressant or therapy, but it also talks about memory loss and other potential risks.