Terry Gross

Charles Reynolds teaches at the University of Pittsburgh School of Medicine and directs research into late-life mood disorders; now he has co-written a book about depression in the elderly and how to treat it. It's titled Living Longer Depression Free: A Family Guide to Recognizing, Treating, and Preventing Depression in Later Life.

Journalist and historian Burton Hersh has followed the Kennedy family for more than 35 years. His latest book is a study of the behind-the-scenes power struggles among the Kennedys and longtime FBI director J. Edgar Hoover.

Hersh writes that as attorney general, Robert F. Kennedy did his best to keep Hoover — technically his subordinate — on a short leash. But knowledge of Kennedy family secrets gave Hoover, always a master manipulator, the upper hand.

As head of the Justice Department's Office of Legal Counsel, Jack Goldsmith led the team of lawyers that advises the presidency on the limits of executive power. During his tenure, he battled the Bush White House on the now-infamous "torture memos," as well as on issues of surveillance and the detention and trial of suspected terrorists. Goldsmith resigned his post after nine months.