An epiphany, as defined by the Random House Unabridged Dictionary, is "a sudden, intuitive perception of or insight into the reality or essential meaning of something, usually initiated by some homely, commonplace occurrence or experience." The theme of clinical epiphanies is the link among 16 case studies, contributed by a total of 20 therapists differing in age, training, experience, and theoretic identification: "most of the critical incidents occurred serendipitously, rather than as part of a treatment plan."