It was during a trip to Paris in 1985 to accept a prestigious writing award that William Styron first realized that the melancholy which had been descending upon him for months was part of the onset of a crippling depression. In this brief book, Styron describes his own experience and eventual recovery, and touches upon the history and clinical aspects of depression as he talks about the many writers who have also been afflicted with this disease.

Styron gives both a retrospective account of the beginnings of his illness, and details his own theories (his abrupt intolerance for alcohol, a possible family history, characters in his early writings in whom he described symptoms strikingly similar to those he would develop himself years later) about the origins of his depression.