Dr. Dorothy Lewis is a psychiatrist specializing in the study of serial killers. She is a psychiatry professor at Yale and New York universities and is the co-author of Guilty by Reason of Insanity, a book she wrote with neurologist Jonathan Pincus .

In 2004, she launched a lawsuit against British playwright Bryony Lavery alleging that portions of her hit Broadway play Frozen were plagiarized from Lewis' book.